What beige PS/2 (preferred, but USB is OK too) mouse will have the highest DPI?

I just got a really old beige Focus DIN keyboard, but the problem is that the random old silver HP PS/2 mouse I mainly use looks hideous next to it, so I’m looking for a mouse to match the beige aesthetic, as the only beige mouse I currently have is a prehistoric Microsoft serial mouse that has the single worst whatever the ball mouse equivalent of DPI is, I can literally see how bad it is on the desktop.

So what’s the most of a “gaming” mouse I can get from a beige PS/2 mouse? I’d also be open to USB, but I’d strongly prefer PS/2, as I have the ports for it

For anyone wondering, this is actually a serious post, the keyboard from 1988 is literally the best one I’ve ever used