I have to confess that I am old - and my eyes have been ravished by over 30 years of computer monitor usage.
So much so, that I can no longer look at a white or off-white screen with dark text for any considerable time - without severe problems with my vision.
I could not use Construct 2 for a few years, because of this. Only recently have they provided a dark skin theme for their game making interface - thus saving my eyes and making it possible for me to use their application.
Is there a way that the GDevelop user interface colors can be configured with such a dark themed skin?