The menu panel background in dark theme is relatively dark and the text is relatively bright. This is eyestrain inducing.
Description of the bug
The menu panel background in dark theme is relatively dark and the text is relatively bright. This is eyestrain inducing. A more comfortable balance could be found. I realize this is straying into opinion, and this is mine. For my display and my sense of comfort and my tonal judgment. I'm not saying the darker default I did is correct, and it's open to discussion, it looks a little light to me now. However it is definitely more readable and softer than GIMP dark default.
Although I don't use dark default, I'd like GIMP 3 to have a great default that's comfortable, for people who never touch or care about the themes.
On related note, it'd be interesting to do a high contrast theme for accessibility, it'd kill my princely eyes but I'm lucky to have sensitive vision.