Apply a Dark Theme to Geany (windows version). I just want share my experience. 1) Google and download a GTK2 dark theme (you can find dozens). As example this one (Nodoka-dark): https://www.gnome-look.org/content/show.php/Fedora+Dark?content=85946 2) Unpack anywhere let us say C:\TMP and navigate to gtk-2.0 folder Copy file : C:\TMP\Nodoka-Dark\gtk-2.0\gtkrc to: C:\Program Files (x86)\Geany\share\themes\MS-Windows\gtk-2.0\gtkrc (save the original one if you plan to roll back) 3) This may be enough, anyway you can play with gtkrc file changing colors to full match your requirements 