

I’ll recommend some modern keyboards that are suitable for your retrokit - I’m a big fan of Unicomp keyboards myself, though they do not do N-key rollover, if that is something important to you. Their lighter shade (they call it ‘white’) is more of a grey than a beige.
You may also consider USB keyboards that can handle P/S2 protocol with use of an adapter (not all of them can do this very well). I have a WASD keyboard for my modern PC that I sometimes also use with my older machines. I would recommend them, but they appear to be out of business.
1990, so not really ‘young’ anymore, but we’re compatriots in thinking computers older than us are cool. By the first time I touched a computer, the machines I like to tinker with now were very obsolete.
That first computer I touched, by the way? It was a 70s model Apple II.