CHANGE TERMINAL COMPILER MESSAGE WINDOW FONT COLOR on an Raspberry PI I know this is an old question but the Ans Above did not work for me, so here is the answer I found In the GEANY menu bar click TOOLS -> Configurations Files -> geany.css in the geany.css file find: geany-compiler-message color: #0000ff

Highlight #0000ff use the TOOLS -> Color Chooser (color wheel) to find a color you like and click on APPLY (it will paste over and replace in hex a color code to replace current one) then FILE->Save and Restart

this will change the hard to read Blue text to any color you wish, caps or small for the HEX dosen't make a difference just make sure line terminates in a semi-colon; the color chose was white #ffffff;

IScreenshot of geany.css file and change of color in Compiler Terminal