My 1998 all in one Mac, is in black and white, is that what you mean about dark mode? So I have to just guess, at all the links and buttons.
It flicker's a lot of some reason. I bought it new. The sales guy, told me it was upgradeable and I would never need another, so getting my lifetime investment out of it.
This is what Sammy tells customers to sale cars.
The trustee I- Mac