diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f175e249..6c4bc58d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,32 +1,8 @@
-name: Build and Test
+name: Test
 
 on: [push, pull_request]
 
 jobs:
-  build_wheels:
-    name: Build wheels on ${{ matrix.os }}
-    runs-on: ubuntu-22.04
-
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
-      - name: Install dependencies
-        run: python -m pip install --upgrade pip setuptools wheel build
-      - name: Use Node.js
-        uses: actions/setup-node@v3
-        with:
-          node-version: "16"
-      - name: Build wheels
-        run: python -m build .
-
-      - uses: actions/upload-artifact@v3
-        with:
-          name: k3d_wheel
-          path: ./dist/k3d*.whl
-      - uses: actions/upload-artifact@v3
-        with:
-          name: k3d_sdist
-          path: ./dist/k3d*.tar.gz
   test:
     name: Run pytest on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
diff --git a/examples/point_cloud_advanced_compression_in_html.ipynb b/examples/point_cloud_advanced_compression_in_html.ipynb
new file mode 100644
index 00000000..0b25b359
--- /dev/null
+++ b/examples/point_cloud_advanced_compression_in_html.ipynb
@@ -0,0 +1,304 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from k3d.helpers import download\n",
+    "from pyunpack import Archive\n",
+    "import os\n",
+    "from IPython.display import IFrame\n",
+    "\n",
+    "filename = download('http://www.semantic3d.net/data/point-clouds/testing1/stgallencathedral_station1_intensity_rgb.7z')\n",
+    "Archive(filename).extractall('./')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import csv\n",
+    "import numpy as np \n",
+    "\n",
+    "data = None\n",
+    "\n",
+    "with open(filename.replace('.7z', '.txt'), mode='r') as csv_file:\n",
+    "    csv_reader = csv.reader(csv_file, delimiter=' ')    \n",
+    "    data = np.array(list(csv_reader), dtype=np.float32)\n",
+    "\n",
+    "# compute color in hex format\n",
+    "data[:, 4] = np.sum(data[:, 4:7].astype(np.uint32) * np.array([1, 256, 256 ** 2]), axis=1)    \n",
+    "data = data[:, 0:5]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "positions = data[::10, 0:3]\n",
+    "colors1 = data[::10, 4].astype(np.uint32)\n",
+    "colors2 = np.clip(colors1.view(np.uint8) * 1.5, 0, 255).astype(np.uint8).view('uint32')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "positions.shape, colors1.shape, colors2.shape"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "cam_pos = [5.251483149143791,\n",
+    " -7.92683507646606,\n",
+    " 3.144285796928443,\n",
+    " -2.470283607444292,\n",
+    " 3.6558150584160503,\n",
+    " 2.3721091212696286,\n",
+    " 0,\n",
+    " 0,\n",
+    " 1]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import time\n",
+    "import json\n",
+    "import k3d\n",
+    "import ipywidgets as widgets\n",
+    "\n",
+    "plot = k3d.plot()\n",
+    "plot += k3d.points(positions, colors1, point_size=0.2, shader=\"flat\") \n",
+    "plot += k3d.points(positions, colors2, point_size=0.2, shader=\"flat\") \n",
+    "plot.display()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "plot.camera = cam_pos"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "with open(\"point_cloud_full.html\", \"w\") as f:\n",
+    "    f.write(plot.get_snapshot(additional_js_code=\"\"\"\n",
+    "    let json = K3DInstance.getWorld().ObjectsListJson;    \n",
+    "    let active = Object.keys(json)[0];\n",
+    "    \n",
+    "    setInterval(() => {\n",
+    "        let newActive;\n",
+    "        \n",
+    "        Object.keys(json).forEach(function (id) {\n",
+    "          if (active === id) {\n",
+    "            json[id].opacity = 0;\n",
+    "            K3DInstance.reload(json[id], {opacity: 0});            \n",
+    "          } else {\n",
+    "            json[id].opacity = 1;\n",
+    "            K3DInstance.reload(json[id], {opacity: 1});\n",
+    "            newActive = id;\n",
+    "          }                    \n",
+    "        });\n",
+    "        \n",
+    "        active = newActive;\n",
+    "      \n",
+    "    }, 2000);\n",
+    "    \n",
+    "    \n",
+    "    \"\"\"))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# size in html\n",
+    "os.stat(\"point_cloud_full.html\").st_size / 1024 / 1024 # size in MB"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "IFrame('point_cloud_full.html', width=900, height=350)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Advanced approach"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import time\n",
+    "import json\n",
+    "import k3d\n",
+    "import ipywidgets as widgets\n",
+    "\n",
+    "plot2 = k3d.plot()\n",
+    "\n",
+    "positions_placeholder = positions.copy()\n",
+    "positions_placeholder.fill(0.0) # filling with one value will boost compression ratio\n",
+    "\n",
+    "plot2 += k3d.points(positions, colors1, point_size=0.2, shader=\"flat\", name=\"main\") \n",
+    "plot2 += k3d.points(positions_placeholder, colors2, point_size=0.2, shader=\"flat\", name=\"second\") \n",
+    "\n",
+    "plot2.display()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "plot2.camera = cam_pos"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "with open(\"point_cloud_advanced.html\", \"w\") as f:\n",
+    "    f.write(plot2.get_snapshot(additional_js_code=\"\"\"\n",
+    "    let json = K3DInstance.getWorld().ObjectsListJson;    \n",
+    "    let active = Object.keys(json)[0];\n",
+    "    let positions = null;\n",
+    "    \n",
+    "    // search for main and save positions from it\n",
+    "    Object.keys(json).forEach(function (id) {\n",
+    "      if (json[id].name === 'main') {\n",
+    "        positions = json[id].positions.data;\n",
+    "      }\n",
+    "    });\n",
+    "    \n",
+    "    // search for second and update positions\n",
+    "    Object.keys(json).forEach(function (id) {\n",
+    "      if (json[id].name === 'second') {\n",
+    "        json[id].positions.data.set(positions);\n",
+    "        K3DInstance.reload(json[id], {positions: json[id].positions}); \n",
+    "      }\n",
+    "    });\n",
+    "    \n",
+    "    \n",
+    "    // like before\n",
+    "    \n",
+    "    setInterval(() => {\n",
+    "        let json = K3DInstance.getWorld().ObjectsListJson;\n",
+    "        let newActive;\n",
+    "        \n",
+    "        Object.keys(json).forEach(function (id) {\n",
+    "          if (active === id) {\n",
+    "            json[id].opacity = 0;\n",
+    "            K3DInstance.reload(json[id], {opacity: 0});            \n",
+    "          } else {\n",
+    "            json[id].opacity = 1;\n",
+    "            K3DInstance.reload(json[id], {opacity: 1});\n",
+    "            newActive = id;\n",
+    "          }                    \n",
+    "        });\n",
+    "        \n",
+    "        active = newActive;\n",
+    "      \n",
+    "    }, 2000);\n",
+    "    \n",
+    "    \n",
+    "    \"\"\"))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# size in html\n",
+    "os.stat(\"point_cloud_advanced.html\").st_size / 1024 / 1024 # size in MB"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "IFrame('point_cloud_advanced.html', width=900, height=350)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# ratio\n",
+    "os.stat(\"point_cloud_advanced.html\").st_size / os.stat(\"point_cloud_full.html\").st_size"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# ratio cannot be 0.5 because we pass information about each points color"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.9.12"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 4
+}
diff --git a/js/package.json b/js/package.json
index 84c02534..034d1c8f 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "k3d",
-  "version": "2.16.0",
+  "version": "2.16.1",
   "description": "3D visualization library",
   "author": "k3d team",
   "main": "src/index.js",
diff --git a/js/src/core/lib/headless.html b/js/src/core/lib/headless.html
index 4e9899cf..4ca42779 100644
--- a/js/src/core/lib/headless.html
+++ b/js/src/core/lib/headless.html
@@ -162,10 +162,14 @@
                 if (promises.length > 0) {
                     Promise.all(promises).then(function () {
                         window.refreshed = true;
+                    }).catch(function(error)  {
+                        console.error(error);
                     });
                 } else {
                     window.refreshed = true;
                 }
+            } else {
+              console.error('k3dRefresh', req.response);
             }
         }
     });
diff --git a/js/src/providers/threejs/initializers/Scene.js b/js/src/providers/threejs/initializers/Scene.js
index d163b10c..af167595 100644
--- a/js/src/providers/threejs/initializers/Scene.js
+++ b/js/src/providers/threejs/initializers/Scene.js
@@ -156,8 +156,8 @@ function cleanup(grids, gridScene) {
         });
     });
 
-    Object.keys(grids.labelsOnEdges).forEach((key) => {
-        grids.labelsOnEdges[key].labels.forEach((label) => {
+    Object.keys(grids.labelsOnPlanes).forEach((key) => {
+        grids.labelsOnPlanes[key].labels.forEach((label) => {
             label.onRemove();
         });
     });
@@ -179,17 +179,28 @@ function rebuildSceneData(K3D, grids, axesHelper, force) {
     const promises = [];
     let originalEdges;
     let updateAxesHelper;
-    let extendedEdges;
     let size;
     let majorScale;
     let minorScale;
+    let i;
     let sceneBoundingBox = new THREE.Box3().setFromArray(K3D.parameters.grid);
-    let extendedSceneBoundingBox;
     const unitVectors = {
         x: new THREE.Vector3(1.0, 0.0, 0.0),
         y: new THREE.Vector3(0.0, 1.0, 0.0),
         z: new THREE.Vector3(0.0, 0.0, 1.0),
     };
+    const cornerToLabeledEdges = {
+        '+x+y+z': ['+x-y', '+x-z', '-x+y', '+y-z', '-x+z', '-y+z'],
+        '+x+y-z': ['+x-y', '+x+z', '-x+y', '+y+z', '-x-z', '-y-z'],
+        '+x-y+z': ['+x+y', '+x-z', '-x-y', '-y-z', '-x+z', '+y+z'],
+        '+x-y-z': ['+x+y', '+x+z', '-x-y', '-y+z', '-x-z', '+y-z'],
+        '-x+y+z': ['-x-y', '-x-z', '+x+y', '+y-z', '+x+z', '-y+z'],
+        '-x+y-z': ['-x-y', '-x+z', '+x+y', '+y+z', '+x-z', '-y-z'],
+        '-x-y+z': ['-x+y', '-x-z', '+x-y', '-y-z', '+x+z', '+y+z'],
+        '-x-y-z': ['-x+y', '-x+z', '+x-y', '-y+z', '+x-z', '+y-z']
+    };
+    const labelsShiftMap = ['x', 'x', 'y', 'y', 'z', 'z'];
+
     const gridColor = new THREE.Color(K3D.parameters.gridColor);
     const labelColor = new THREE.Color(K3D.parameters.labelColor);
 
@@ -249,6 +260,7 @@ function rebuildSceneData(K3D, grids, axesHelper, force) {
 
         // generate new one
         size = sceneBoundingBox.getSize(new THREE.Vector3());
+
         majorScale = pow10ceil(Math.max(size.x, size.y, size.z)) / 10.0;
         minorScale = majorScale / 10.0;
 
@@ -261,15 +273,15 @@ function rebuildSceneData(K3D, grids, axesHelper, force) {
         size = sceneBoundingBox.getSize(new THREE.Vector3());
 
         sceneBoundingBox.min = new THREE.Vector3(
-            Math.floor(sceneBoundingBox.min.x / majorScale) * majorScale,
-            Math.floor(sceneBoundingBox.min.y / majorScale) * majorScale,
-            Math.floor(sceneBoundingBox.min.z / majorScale) * majorScale,
+            Math.floor(sceneBoundingBox.min.x / minorScale) * minorScale,
+            Math.floor(sceneBoundingBox.min.y / minorScale) * minorScale,
+            Math.floor(sceneBoundingBox.min.z / minorScale) * minorScale,
         );
 
         sceneBoundingBox.max = new THREE.Vector3(
-            Math.ceil(sceneBoundingBox.max.x / majorScale) * majorScale,
-            Math.ceil(sceneBoundingBox.max.y / majorScale) * majorScale,
-            Math.ceil(sceneBoundingBox.max.z / majorScale) * majorScale,
+            Math.ceil(sceneBoundingBox.max.x / minorScale) * minorScale,
+            Math.ceil(sceneBoundingBox.max.y / minorScale) * minorScale,
+            Math.ceil(sceneBoundingBox.max.z / minorScale) * minorScale,
         );
 
         size = sceneBoundingBox.getSize(new THREE.Vector3());
@@ -310,90 +322,77 @@ function rebuildSceneData(K3D, grids, axesHelper, force) {
                 }],
         };
 
-        // expand sceneBoundingBox to avoid labels overlapping
-        extendedSceneBoundingBox = sceneBoundingBox.clone().expandByScalar(majorScale * 0.15);
-
         originalEdges = generateEdgesPoints(sceneBoundingBox);
-        extendedEdges = generateEdgesPoints(extendedSceneBoundingBox);
 
-        Object.keys(originalEdges).forEach((key) => {
-            grids.labelsOnEdges[key] = {};
-            grids.labelsOnEdges[key].v = originalEdges[key];
-            grids.labelsOnEdges[key].p = extendedEdges[key];
-            grids.labelsOnEdges[key].labels = [];
-        });
+        // create labels for ticks - iterate over all 8 corners of box
 
-        // create labels
-        Object.keys(grids.labelsOnEdges).forEach((key) => {
-            const iterateAxis = _.difference(['x', 'y', 'z'], key.replace(/[^xyz]/g, '').split(''))[0];
-            let iterationCount = size[iterateAxis] / majorScale;
-
-            let deltaValue = unitVectors[iterateAxis].clone().multiplyScalar(majorScale);
-            let deltaPosition = unitVectors[iterateAxis].clone().multiplyScalar(
-                grids.labelsOnEdges[key].p[0].distanceTo(grids.labelsOnEdges[key].p[1]) / iterationCount,
-            );
-            let j;
-            let v;
-            let p;
-            let label;
-
-            if (iterationCount <= 2) {
-                const originalIterationCount = iterationCount;
-
-                iterationCount = originalIterationCount * 5;
-                deltaValue = unitVectors[iterateAxis].clone()
-                    .multiplyScalar((originalIterationCount * majorScale) / iterationCount);
-                deltaPosition = unitVectors[iterateAxis].clone().multiplyScalar(
-                    grids.labelsOnEdges[key].p[0].distanceTo(grids.labelsOnEdges[key].p[1]) / iterationCount,
-                );
-            }
+        for (i = 0; i < 8; i++) {
+            let corner = (i & 0x01 ? '-' : '+') + 'x' + (i & 0x02 ? '-' : '+') + 'y' + (i & 0x04 ? '-' : '+') + 'z';
 
-            for (j = 1; j <= iterationCount - 1; j++) {
-                v = grids.labelsOnEdges[key].v[0].clone().add(deltaValue.clone().multiplyScalar(j));
-                p = grids.labelsOnEdges[key].p[0].clone().add(deltaPosition.clone().multiplyScalar(j));
+            grids.labelsOnPlanes[corner] = {};
+            grids.labelsOnPlanes[corner].labels = [];
 
-                label = Text.create({
+            cornerToLabeledEdges[corner].forEach(function (edge, index) {
+                let j;
+                let p;
+                let label;
+                const iterateAxis = _.difference(['x', 'y', 'z'], edge.replace(/[^xyz]/g, '').split(''))[0];
+
+                let deltaPosition = unitVectors[iterateAxis].clone().multiplyScalar(majorScale);
+                let iterationCount = size[iterateAxis] / majorScale;
+                let line = originalEdges[edge];
+
+                if (iterationCount <= 2) {
+                    const originalIterationCount = iterationCount;
+
+                    iterationCount = Math.max(originalIterationCount * 5, 2);
+                    deltaPosition = unitVectors[iterateAxis].clone()
+                        .multiplyScalar((originalIterationCount * majorScale) / iterationCount);
+                }
+
+                let labelShiftDirection = corner[Math.floor(index / 2) * 2] === "+";
+
+                // axis ticks labels
+                for (j = 1; j <= iterationCount - 1; j++) {
+                    p = line[0].clone().add(deltaPosition.clone().multiplyScalar(j)).add(
+                        unitVectors[labelsShiftMap[index]].clone()
+                            .multiplyScalar(minorScale * (labelShiftDirection ? 1 : -1))
+                    );
+
+                    label = Text.create({
+                        position: p.toArray(),
+                        reference_point: 'cc',
+                        color: labelColor,
+                        text: parseFloat((p[iterateAxis]).toFixed(10)).toString(),
+                        size: 0.75,
+                    }, K3D);
+
+                    /* jshint loopfunc: true */
+                    promises.push(label.then((obj) => {
+                        grids.labelsOnPlanes[corner].labels.push(obj);
+                    }));
+                    /* jshint loopfunc: false */
+                }
+
+                // axis label
+                p = (new THREE.Vector3()).lerpVectors(line[0], line[1], 0.5).add(
+                    unitVectors[labelsShiftMap[index]].clone()
+                        .multiplyScalar(minorScale * 2.0 * (labelShiftDirection ? 1 : -1))
+                );
+
+                const axisLabel = Text.create({
                     position: p.toArray(),
                     reference_point: 'cc',
                     color: labelColor,
-                    text: parseFloat((v[iterateAxis]).toFixed(15)).toString(),
-                    size: 0.75,
+                    text: K3D.parameters.axes[['x', 'y', 'z'].indexOf(iterateAxis)],
+                    size: 1.0,
                 }, K3D);
 
-                /* jshint loopfunc: true */
-                promises.push(label.then((obj) => {
-                    grids.labelsOnEdges[key].labels.push(obj);
-                }));
-                /* jshint loopfunc: false */
-            }
-
-            // add axis label
-            const middleValue = grids.labelsOnEdges[key].v[0].clone().add(
-                (new THREE.Vector3()).subVectors(grids.labelsOnEdges[key].v[1], grids.labelsOnEdges[key].v[0])
-                    .multiplyScalar(0.5),
-            );
-
-            const middlePosition = grids.labelsOnEdges[key].p[0].clone().add(
-                (new THREE.Vector3()).subVectors(grids.labelsOnEdges[key].p[1], grids.labelsOnEdges[key].p[0])
-                    .multiplyScalar(0.5),
-            );
-
-            const middle = middlePosition.add(
-                (new THREE.Vector3()).subVectors(middlePosition, middleValue).multiplyScalar(2.0),
-            );
-
-            const axisLabel = Text.create({
-                position: middle.toArray(),
-                reference_point: 'cc',
-                color: labelColor,
-                text: K3D.parameters.axes[['x', 'y', 'z'].indexOf(iterateAxis)],
-                size: 1.0,
-            }, K3D);
-
-            axisLabel.then((obj) => {
-                grids.labelsOnEdges[key].labels.push(obj);
+                axisLabel.then((obj) => {
+                    grids.labelsOnPlanes[corner].labels.push(obj);
+                });
             });
-        });
+        }
 
         // create grids
         Object.keys(grids.planes).forEach(function (axis) {
@@ -475,7 +474,7 @@ function rebuildSceneData(K3D, grids, axesHelper, force) {
 
 function refreshGrid(K3D, grids) {
     /* jshint validthis:true */
-    const visiblePlanes = [];
+    let currentCorner = '';
     const cameraDirection = new THREE.Vector3();
 
     this.camera.getWorldDirection(cameraDirection);
@@ -487,21 +486,12 @@ function refreshGrid(K3D, grids) {
         grids.planes[axis][0].obj.visible = dot1 <= dot2 && K3D.parameters.gridVisible;
         grids.planes[axis][1].obj.visible = dot1 > dot2 && K3D.parameters.gridVisible;
 
-        if (grids.planes[axis][0].obj.visible) {
-            visiblePlanes.push(`+${axis}`);
-        }
-
-        if (grids.planes[axis][1].obj.visible) {
-            visiblePlanes.push(`-${axis}`);
-        }
+        currentCorner += (dot1 <= dot2 ? '-' : '+') + axis;
     }, this);
 
-    Object.keys(grids.labelsOnEdges).forEach((key) => {
-        const axes = key.match(/.{2}/g);
-        const shouldBeVisible = _.intersection(axes, visiblePlanes).length === 1;
-
-        grids.labelsOnEdges[key].labels.forEach((label) => {
-            if (shouldBeVisible && K3D.parameters.gridVisible) {
+    Object.keys(grids.labelsOnPlanes).forEach((corner) => {
+        grids.labelsOnPlanes[corner].labels.forEach((label) => {
+            if (corner === currentCorner && K3D.parameters.gridVisible) {
                 label.show();
             } else {
                 label.hide();
@@ -533,7 +523,7 @@ function raycast(K3D, x, y, camera, click, viewMode) {
     });
 
     if (meshes.length > 0) {
-        intersects = intersect.concat(this.raycaster.intersectObjects(meshes));
+        intersects = intersects.concat(this.raycaster.intersectObjects(meshes));
     }
 
     if (intersects.length > 0) {
@@ -573,7 +563,7 @@ module.exports = {
         const ambientLight = new THREE.AmbientLight(0xffffff);
         const grids = {
             planes: {},
-            labelsOnEdges: {},
+            labelsOnPlanes: {},
         };
         const self = this;
 
diff --git a/k3d/factory.py b/k3d/factory.py
index 8a747b27..f9afaad2 100644
--- a/k3d/factory.py
+++ b/k3d/factory.py
@@ -1959,7 +1959,7 @@ def vtk_poly_data(
             poly_data.GetCellData().GetArray(cell_color_attribute[0])
         )
         color_range = cell_color_attribute[1:3]
-    elif volume != []:
+    elif len(volume) > 0:
         color_range = check_attribute_color_range(volume, color_range)
 
     vertices = nps.vtk_to_numpy(poly_data.GetPoints().GetData())
diff --git a/k3d/headless.py b/k3d/headless.py
index b5f5346e..15c38113 100644
--- a/k3d/headless.py
+++ b/k3d/headless.py
@@ -69,7 +69,10 @@ def generate():
                             try:
                                 sync = (o[p] != self.synced_objects[o.id][p]).any()
                             except Exception:
-                                sync = o[p] != self.synced_objects[o.id][p]
+                                try:
+                                    sync = o[p].shape != self.synced_objects[o.id][p].shape
+                                except Exception:
+                                    sync = o[p] != self.synced_objects[o.id][p]
 
                         if sync:
                             if o.id not in objects_diff.keys():
@@ -93,7 +96,8 @@ def generate():
             return Response(msgpack.packb(diff, use_bin_type=True),
                             mimetype='application/octet-stream')
 
-        while self.browser.execute_script("return typeof(window.headlessK3D) !== 'undefined'") == False:
+        while self.browser.execute_script(
+                "return typeof(window.headlessK3D) !== 'undefined'") == False:
             time.sleep(1)
             self.browser.get(url="http://localhost:" + str(port) + "/headless.html")
 
@@ -149,3 +153,19 @@ def get_headless_driver(no_headless=False):
 
     return webdriver.Chrome(service=ChromeService(ChromeDriverManager().install()),
                             options=options)
+
+
+def get_headless_firefox_driver(no_headless=False):
+    from selenium import webdriver
+    from selenium.webdriver.firefox.service import Service as FirefoxService
+    from webdriver_manager.firefox import GeckoDriverManager
+
+    options = webdriver.FirefoxOptions()
+
+    options.add_argument("--no-sandbox")
+
+    if not no_headless:
+        options.add_argument("--headless")
+
+    return webdriver.Firefox(service=FirefoxService(GeckoDriverManager().install()),
+                             options=options)
diff --git a/k3d/helpers.py b/k3d/helpers.py
index 2b971dbe..03d668fd 100644
--- a/k3d/helpers.py
+++ b/k3d/helpers.py
@@ -214,7 +214,7 @@ def check_attribute_color_range(attribute, color_range=()):
 
     Parameters
     ----------
-    attribute : list
+    attribute : list or dict (for timeseries)
         Array of numbers.
     color_range : tuple, optional
         Two numbers, by default ().
@@ -224,10 +224,16 @@ def check_attribute_color_range(attribute, color_range=()):
     tuple
         Color range.
     """
-    if type(attribute) is dict or attribute.size == 0 or len(color_range) == 2:
-        return color_range
 
-    color_range = minmax(attribute)
+    if len(color_range) == 2:
+        return color_range
+    elif type(attribute) is dict:
+        t = [minmax(attribute[k]) for k in attribute.keys()]
+        color_range = [min([v[0] for v in t]), max([v[1] for v in t])]
+    elif attribute.size == 0:
+        return color_range
+    else:
+        color_range = minmax(attribute)
 
     if color_range[0] == color_range[1]:
         color_range[1] += 1.0
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index 97827172..ba31d4bb 100644
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index 1fcd9fe6..0760e5e1 100644
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index 604a56f0..7c3a84f5 100644
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index 858a245b..c10fda85 100644
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index 05b78cb9..545092e8 100644
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diff --git a/package.json b/package.json
index 6156a2d5..b5db7163 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "k3d",
-  "version": "2.16.0",
+  "version": "2.16.1",
   "description": "3D visualization library",
   "keywords": [
     "jupyter",