I do, but most of mine are just black crew socks that just go in a pile together.

Those two are vaguely similar: another pair successfully identified

I don’t

I do, not by colour but by “type” I guess. Mostly so I don’t get one long and one short sock, or one wool and one bamboo or whatever. Cause my autistic ass can’t handle having two different feels lol.

Nowadays I just try to bulk buy the same socks, so soon this hopefully won’t be a problem anymore.