Thank you very much @techee for these changes! It looks really good. So, I compiled Geany 1.38 since I wanted to fix something that was bothering me on Windows. I could not identify the theme loading mechanism, so I added your theme inclusion into geany.css and it worked. I ended up with something of Adwaita+Prof-Gnome, but it is more Prof-Gnome.
![geany-138-mod](https://user-images.githubusercontent.com/69199594/194708781-544fffb8-30e2-4...)