There’s the Silverstone FLP02 [0], for a mere $250 you can get a case that looks like it was built in 1996, complete with a turbo button that spins all your fans to max.
You can still get a handful of non-RGB cases. They're usually sold as the "Silent" version (i. e. Fractal Pop series, Gamemax Titan Silent series) since the non-glass side panels often have sound-deadening material glued in.
15 bucks of rattlecans will make any case beige. :)
I'm sort of waiting for a motherboard manufacturer to weigh in though. Even the "pro" ranges tend to be black PCBs with a lot of complex silkscreening. The boards that don't have any of that tend to be OEM-tier boards with skimpy features. Surely someone can make an X870E-VINTAGE board with a green or yellow-brown substrate, no nonsense silkscreening, and finned brass heatsinkage that looks like the sort of thing you saw permanently glued to your 486DX2/66 CPU?
I want the aesthetic, but that can still be implemented in the context of no-compromises modern hardware.
Yes, RGB is so common now that it's not popular, and retro stuff is coming back in. I think I saw even some landscape PC cases (laid flat) with fake HDD drive slots and a turbo button.
