C::B Fortran: Linux Mint dark theme issue

[Tilce]

Hello.

First off, thank you for your work in C::B Fortran. It's helping me a lot in my projects. One issue I've been dealing with, however, is that I use a dark theme on my system and C::B Fortran automatically assigns a dark GTK theme to its interface. The result is not pleasant (image attached below).

It doesn't look that bad at first glance, but the menus and some of the options are almost unreadable.

Is there any way I can force C::B Fortran to use the GTK theme Adwaita or Fusion (so that the interface at least becomes readable)? With normal C::B, all I have to do is, in the command line, run:

GTK_THEME=Fusion codeblocks

That does not work with this C::B Fortran, or at least I couldn't get it to work. Any and all help would be greatly appreciated.