You might not like it, but Borland yellow on blue was peak IDE design.
Personally, I have downloaded Borland themes for all my IDEs. I don't use them, of course, because I'm not entirely insane and I value my eyesight too much, but I have downloaded them.
I have Borland based themes because I want contrast. I hate all these pastel dull themes where all the colors are a similar hue or shade. Who uses them? How do they use them?
Turbo Pascal was my first proper IDE. I remember our school had a new Ibm Ps/2 which ran dos 4.something, it had the text ui based editor, but it was just an editor. Turbo Pascal is where I spent 3 years of college, day and night.
I have a colleague who is really into Rick and Morty and has colorful hair. He's one of those who has a pink/purple theme with little to no contrast. I keep my distance.
Sure, but you can also have contrast with a dark background that isn't constantly shooting a third of the photons your screen can generate (or more, since in some screens blue pixels are the largest), and the most energetic at that, at your eyes... high contrast themes tend to have a black background (not a gray one like most dark themes) precisely as a way to maximise contrast...
(It was even worse when we sat all day in front of a fucking particle accelerator, of course; frankly, as much as I loved CRTs' ability to work with multiple resolutions I don't know how we didn't all end up going blind...)