FocusedWolf: Good news for you,
Code::Blocks on linux looks almost exactly to
Anjuta (can take screenshots if you want), that's because it renders using GTK there.
BTW, if you're really interested in making C::B themeable, you should contribute a theme for the
wxUniversal port of wxWidgets, which supports non-native themes.
Nothing to do from the C::B side right now, except making configurable some control things like the
color background on the
Message/Management panels.
Native widgets are the best for me, and here's why: the applications will look as good as the theme you choose for the OS.
If you are using
Windows XP, just get a theme like
FlyakiteOSX and your Code::Blocks will look like this: