Dark-blue color scheme for Geany with current line highlighting, improved matching braces highlight and if whitespace display enabled - reduced contrast of the whitespace. TODO: find out how to change color for identifiers like 'object', 'array' to 'teal_blue'.
To install the scheme locally for the current user, simply copy the
cobalt.conf file to ~/.config/geany/colorschemes/.
For a global installation, a copy needs to be put into
/usr/share/geany/colorschemes/.
P.S. If you like the code style on the screenshot, (it is Modified Horstmann style) here is a guide to reformat automatically: https://gist.github.com/AGenchev/a53ecf94ee7b0a910c10826e5d7417f9