How Can I Add, and Use, a Color Scheme for Geany?

You can get theme files from https://github.com/codebrainz/geany-themes (I prefer Spyder Dark and InkPot). The easiest way is to click "Clone or download" and then "Download ZIP".

Just copy the .conf files directly into ~/.config/geany/colorschemes/. (Not wrapped in another subfolder as a result of downloading, archive extraction or Git.)

They will immediately be available from the menu bar under View → Change Color Scheme...

Note: These work for Geany 1.22 and above. For older versions you may need to:

• download different files (links provided in the README above or at http://wiki.geany.org/themes/start)
• navigate to View → Editor → Change Color Scheme instead
• restart Geany before the themes appear as new options

• You can invert the scheme:

  Edit → Preferences → Editor → Display → Check: Invert highlighter color scheme.

• The alt scheme is in (You may test if can add other one or just modify this one)

  /usr/share/geany/colorschemes/alt.conf
  

  Note: How did I found this?

  I check for geany packages using synaptic. Looking in their Installed Files tab then it was found in geany-common package.

You may try this solution to change the color scheme of your Geany Text Editor: https://www.youtube.com/watch?v=3flgO81_3dE.

Download Geany Color Scheme from here: https://github.com/geany/geany-themes/