Please refer to the attached screenshot.
The colors in the code preview area are taken over from my settings. Nice!
The colors in the tree are a bit problematic. The dark editor background is not applied here.
PS: Did you notice the large icon in the combo box? This happens on high-dpi screens.
Thank you for describing the issue and providing the screenshot, Olaf. We agree that it is difficult to read such UI with these Font an Colors settings. We will see what we can do here. Please bear with us. We will notify you once we make progress.