diff --git a/CHANGELOG.md b/CHANGELOG.md
index 94afdbe..ccf113f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,9 +8,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Features
 - Update Colors using the `System.Windows.Media.Colors` as reference.
 - Update `MaterialUtils` and `GraphicsStyleUtils` with default 9 colors.
+- Add `ColorExtension` with `ColorEquals`, `Lerp`, `ToColor` and `ToColorWithTransparency`.
+- Add `ColorExtension` with `ToHex` for `Color` and `ColorWithTransparency`
 ### Tests
 - Test all color names in `System.Windows.Media.Colors` with `Colors`.
 - Test all 9 colors in `MaterialUtils` and `GraphicsStyleUtils`.
+- Test for `ColorExternsion`
 
 ## [0.3.1] / 2024-01-09 - 2024-04-13
 ### Features
diff --git a/Directory.Build.props b/Directory.Build.props
index 71cd1ec..2ee2d33 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,6 +1,6 @@
 <Project>
 	<PropertyGroup>
-		<Version>0.3.2-beta</Version>
+		<Version>0.3.2-rc</Version>
     <RevitVersionTests>2024</RevitVersionTests>
     <RevitVersionCoreTests>2025</RevitVersionCoreTests>
     <RevitForceOpenClose>true</RevitForceOpenClose>
diff --git a/ricaun.Revit.DB.Shape.Tests/Color_Tests.cs b/ricaun.Revit.DB.Shape.Tests/Color_Tests.cs
index 7123795..c1578b4 100644
--- a/ricaun.Revit.DB.Shape.Tests/Color_Tests.cs
+++ b/ricaun.Revit.DB.Shape.Tests/Color_Tests.cs
@@ -1,6 +1,7 @@
 using Autodesk.Revit.DB;
 using NUnit.Framework;
 using ricaun.Revit.DB.Shape.Tests.Utils;
+using ricaun.Revit.DB.Shape.Extensions;
 using System.Collections.Generic;
 
 namespace ricaun.Revit.DB.Shape.Tests
@@ -45,7 +46,7 @@ public void Colors_Tests()
                 var expectedColor = new Color(color.Value.R, color.Value.G, color.Value.B);
                 if (colorsType.GetProperty(name)?.GetValue(null) is Color colorTest)
                 {
-                    Assert.IsTrue(colorTest.ColorEquals(expectedColor), 
+                    Assert.IsTrue(colorTest.ColorEquals(expectedColor),
                         $"{name} Color ({colorTest.Red},{colorTest.Green},{colorTest.Blue}) is not equal to ({expectedColor.Red},{expectedColor.Green},{expectedColor.Blue})");
                 }
                 else
@@ -93,7 +94,64 @@ public void Colors_Index_Get_All_Tests()
                 Assert.IsNotNull(Colors.Index.Get((byte)i));
             }
         }
-    }
 
+        [Test]
+        public void ColorExtension_ColorEquals_Tests()
+        {
+            for (int i = 0; i < 256; i++)
+            {
+                var color = Colors.Index.Get((byte)i);
+                Assert.IsTrue(color.ColorEquals(color));
+
+                var colorT = color.ToColorWithTransparency();
+                Assert.IsTrue(colorT.ColorEquals(colorT));
+                Assert.IsTrue(colorT.ColorEquals(color));
+                Assert.IsTrue(color.ColorEquals(colorT));
+
+                var colorT100 = color.ToColorWithTransparency(100);
+                Assert.IsFalse(colorT.ColorEquals(colorT100));
+                Assert.IsFalse(colorT100.ColorEquals(colorT));
+
+                var _color = colorT.ToColor();
+                Assert.IsTrue(color.ColorEquals(_color));
+            }
+        }
+
+        [Test]
+        public void ColorExtension_Lerp_Tests()
+        {
+            var color = Colors.Black.Lerp(Colors.Gray, 0.5);
+            var colorExpected = new Color(64, 64, 64);
+            Assert.IsTrue(color.ColorEquals(colorExpected));
+        }
+
+        [Test]
+        public void ColorExtension_ToHex_Tests()
+        {
+            var tests = new Dictionary<string, Color>()
+            {
+                { "#000000", Colors.Black },
+                { "#FF0000", Colors.Red },
+                { "#008000", Colors.Green },
+                { "#00FF00", Colors.Lime },
+                { "#0000FF", Colors.Blue },
+                { "#FFFF00", Colors.Yellow },
+                { "#00FFFF", Colors.Cyan },
+                { "#FF00FF", Colors.Magenta },
+                { "#808080", Colors.Gray },
+                { "#FFFFFF", Colors.White },
+            };
+
+            foreach (var test in tests)
+            {
+                Assert.AreEqual(test.Key, test.Value.ToHex());
+            }
+
+            foreach (var test in tests)
+            {
+                Assert.AreEqual(test.Key, test.Value.ToColorWithTransparency().ToHex());
+            }
+        }
+    }
 
 }
\ No newline at end of file
diff --git a/ricaun.Revit.DB.Shape.Tests/LineColorCreate_Tests.cs b/ricaun.Revit.DB.Shape.Tests/LineColorCreate_Tests.cs
index e830a8e..c8ae523 100644
--- a/ricaun.Revit.DB.Shape.Tests/LineColorCreate_Tests.cs
+++ b/ricaun.Revit.DB.Shape.Tests/LineColorCreate_Tests.cs
@@ -1,6 +1,7 @@
 using Autodesk.Revit.DB;
 using NUnit.Framework;
 using ricaun.Revit.DB.Shape.Tests.Utils;
+using ricaun.Revit.DB.Shape.Extensions;
 using System.Collections.Generic;
 
 namespace ricaun.Revit.DB.Shape.Tests
diff --git a/ricaun.Revit.DB.Shape.Tests/MaterialCreate_Tests.cs b/ricaun.Revit.DB.Shape.Tests/MaterialCreate_Tests.cs
index 171514e..a3ba058 100644
--- a/ricaun.Revit.DB.Shape.Tests/MaterialCreate_Tests.cs
+++ b/ricaun.Revit.DB.Shape.Tests/MaterialCreate_Tests.cs
@@ -2,6 +2,7 @@
 using Autodesk.Revit.DB;
 using NUnit.Framework;
 using ricaun.Revit.DB.Shape.Tests.Utils;
+using ricaun.Revit.DB.Shape.Extensions;
 using System;
 using System.Collections.Generic;
 
diff --git a/ricaun.Revit.DB.Shape.Tests/Utils/ColorExtension.cs b/ricaun.Revit.DB.Shape.Tests/Utils/ColorExtension.cs
index 1484f5f..9171db3 100644
--- a/ricaun.Revit.DB.Shape.Tests/Utils/ColorExtension.cs
+++ b/ricaun.Revit.DB.Shape.Tests/Utils/ColorExtension.cs
@@ -1,30 +1,30 @@
-using Autodesk.Revit.DB;
+//using Autodesk.Revit.DB;
 
-namespace ricaun.Revit.DB.Shape.Tests.Utils
-{
-    public static class ColorExtension
-    {
-        public static bool ColorEquals(this Color colorA, Color colorB)
-        {
-            return colorA.Red == colorB.Red && colorA.Green == colorB.Green && colorA.Blue == colorB.Blue;
-        }
+//namespace ricaun.Revit.DB.Shape.Tests.Utils
+//{
+//    public static class ColorExtension
+//    {
+//        public static bool ColorEquals(this Color colorA, Color colorB)
+//        {
+//            return colorA.Red == colorB.Red && colorA.Green == colorB.Green && colorA.Blue == colorB.Blue;
+//        }
 
-        public static bool ColorEquals(this Color colorA, ColorWithTransparency colorB)
-        {
-            return colorA.Red == colorB.GetRed() && colorA.Green == colorB.GetGreen() && colorA.Blue == colorB.GetBlue();
-        }
+//        public static bool ColorEquals(this Color colorA, ColorWithTransparency colorB)
+//        {
+//            return colorA.Red == colorB.GetRed() && colorA.Green == colorB.GetGreen() && colorA.Blue == colorB.GetBlue();
+//        }
 
-        public static bool ColorEquals(this ColorWithTransparency colorA, Color colorB)
-        {
-            return colorB.ColorEquals(colorA);
-        }
+//        public static bool ColorEquals(this ColorWithTransparency colorA, Color colorB)
+//        {
+//            return colorB.ColorEquals(colorA);
+//        }
 
-        public static bool ColorEquals(this ColorWithTransparency colorA, ColorWithTransparency colorB)
-        {
-            return colorA.GetRed() == colorB.GetRed() &&
-                colorA.GetGreen() == colorB.GetGreen() &&
-                colorA.GetBlue() == colorB.GetBlue() &&
-                colorA.GetTransparency() == colorB.GetTransparency();
-        }
-    }
-}
\ No newline at end of file
+//        public static bool ColorEquals(this ColorWithTransparency colorA, ColorWithTransparency colorB)
+//        {
+//            return colorA.GetRed() == colorB.GetRed() &&
+//                colorA.GetGreen() == colorB.GetGreen() &&
+//                colorA.GetBlue() == colorB.GetBlue() &&
+//                colorA.GetTransparency() == colorB.GetTransparency();
+//        }
+//    }
+//}
\ No newline at end of file
diff --git a/ricaun.Revit.DB.Shape/Extensions/ColorExtension.cs b/ricaun.Revit.DB.Shape/Extensions/ColorExtension.cs
new file mode 100644
index 0000000..669b002
--- /dev/null
+++ b/ricaun.Revit.DB.Shape/Extensions/ColorExtension.cs
@@ -0,0 +1,130 @@
+using Autodesk.Revit.DB;
+
+namespace ricaun.Revit.DB.Shape.Extensions
+{
+    /// <summary>
+    /// ColorExtension
+    /// </summary>
+    public static class ColorExtension
+    {
+        /// <summary>
+        /// Linearly interpolates between colors a and b by t.
+        /// </summary>
+        /// <param name="colorA"></param>
+        /// <param name="colorB"></param>
+        /// <param name="t"></param>
+        public static Color Lerp(this Color colorA, Color colorB, double t)
+        {
+            byte r = (byte)(colorA.Red + (colorB.Red - colorA.Red) * t);
+            byte g = (byte)(colorA.Green + (colorB.Green - colorA.Green) * t);
+            byte b = (byte)(colorA.Blue + (colorB.Blue - colorA.Blue) * t);
+            return new Color(r, g, b);
+        }
+
+        /// <summary>
+        /// ToColorWithTransparency
+        /// </summary>
+        /// <param name="color"></param>
+        /// <param name="alpha"></param>
+        /// <returns></returns>
+        public static ColorWithTransparency ToColorWithTransparency(this Color color, byte alpha = byte.MaxValue)
+        {
+            if (color is null) return null;
+            var colorWithTransparency = new ColorWithTransparency(color.Red, color.Green, color.Blue, alpha);
+            return colorWithTransparency;
+        }
+
+        /// <summary>
+        /// ToColor
+        /// </summary>
+        /// <param name="colorWithTransparency"></param>
+        /// <returns></returns>
+        public static Color ToColor(this ColorWithTransparency colorWithTransparency)
+        {
+            if (colorWithTransparency is null) return null;
+            var color = new Color(
+                (byte)colorWithTransparency.GetRed(),
+                (byte)colorWithTransparency.GetGreen(),
+                (byte)colorWithTransparency.GetBlue());
+            return color;
+        }
+
+        #region Equals
+        /// <summary>
+        /// ColorEquals RGB
+        /// </summary>
+        /// <param name="colorA"></param>
+        /// <param name="colorB"></param>
+        public static bool ColorEquals(this Color colorA, Color colorB)
+        {
+            return colorA.Red == colorB.Red && colorA.Green == colorB.Green && colorA.Blue == colorB.Blue;
+        }
+        /// <summary>
+        /// ColorEquals RGB only the transparency is not compared.
+        /// </summary>
+        /// <param name="colorA"></param>
+        /// <param name="colorB"></param>
+        public static bool ColorEquals(this Color colorA, ColorWithTransparency colorB)
+        {
+            return colorA.Red == colorB.GetRed() && colorA.Green == colorB.GetGreen() && colorA.Blue == colorB.GetBlue();
+        }
+        /// <summary>
+        /// ColorEquals RGB only the transparency is not compared.
+        /// </summary>
+        /// <param name="colorA"></param>
+        /// <param name="colorB"></param>
+        public static bool ColorEquals(this ColorWithTransparency colorA, Color colorB)
+        {
+            return colorB.ColorEquals(colorA);
+        }
+        /// <summary>
+        /// ColorEquals RGB and Transparency
+        /// </summary>
+        /// <param name="colorA"></param>
+        /// <param name="colorB"></param>
+        public static bool ColorEquals(this ColorWithTransparency colorA, ColorWithTransparency colorB)
+        {
+            return colorA.GetRed() == colorB.GetRed() &&
+                colorA.GetGreen() == colorB.GetGreen() &&
+                colorA.GetBlue() == colorB.GetBlue() &&
+                colorA.GetTransparency() == colorB.GetTransparency();
+        }
+        #endregion
+
+        /// <summary>
+        /// Convert to #RRGGBB in hex format
+        /// </summary>
+        /// <param name="color"></param>
+        /// <returns></returns>
+        public static string ToHex(this Color color)
+        {
+            return ToHex(color.Red, color.Green, color.Blue);
+        }
+
+        /// <summary>
+        /// Convert to #RRGGBB or #AARRGGBB in hex format
+        /// </summary>
+        /// <param name="color"></param>
+        /// <returns></returns>
+        public static string ToHex(this ColorWithTransparency color)
+        {
+            return ToHex((byte)color.GetRed(), (byte)color.GetGreen(), (byte)color.GetBlue(), (byte)color.GetTransparency());
+        }
+
+        /// <summary>
+        /// Convert to #RRGGBB or #AARRGGBB
+        /// </summary>
+        /// <param name="red"></param>
+        /// <param name="green"></param>
+        /// <param name="blue"></param>
+        /// <param name="alpha"></param>
+        /// <returns></returns>
+        public static string ToHex(byte red, byte green, byte blue, byte alpha = byte.MaxValue)
+        {
+            if (alpha == byte.MaxValue)
+                return string.Format("#{0:X2}{1:X2}{2:X2}", red, green, blue);
+
+            return string.Format("#{0:X2}{1:X2}{2:X2}{3:X2}", alpha, red, green, blue);
+        }
+    }
+}
diff --git a/ricaun.Revit.DB.Shape/XYZUtils.cs b/ricaun.Revit.DB.Shape/XYZUtils.cs
index 75a3b99..4c3f12f 100644
--- a/ricaun.Revit.DB.Shape/XYZUtils.cs
+++ b/ricaun.Revit.DB.Shape/XYZUtils.cs
@@ -18,7 +18,7 @@ public static class XYZUtils
         /// <param name="source"></param>
         /// <param name="tolerance"></param>
         /// <returns></returns>
-        public static bool IsAlmostParallelTo(this XYZ value, XYZ source, double tolerance = Tolerance)
+        public static bool IsAlmostParallelTo(XYZ value, XYZ source, double tolerance = Tolerance)
         {
             return Math.Abs(value.DotProduct(source)) >= 1.0 - tolerance;
         }