My wife Loves baseball, and we've been watching more this year, especially with MLB opening back up to fans. The Reds have been pretty fun to watch this year, and are batting well.
I was watching the game about two months ago and I noticed that the catcher's hand had bright orange nail polish. I'd never noticed this before. This catcher is young and clean shaven, and frankly has a pretty face. Not saying he's a crossdresser, but I bet he'd be good at it
Anyway I had my suspicion as to why the nail polish, so I looked it up. It's been going on a few years at least, the catcher's can signal the pitcher better and more subtly that way.
So now you have an excuse for polish. Just become a professional catcher. Of course this only works for one hand, and probably needs to be a Day-glow color. And you need to be right handed. There are Very few left handed catcher's because of the base running direction.