I will also say that I coach HS and have dealt with middle school kids as well. I tell kids to look "game day pretty" for games.
When they ask what that looks like, I show them pics of some collegiate athletes made up for game day. Not over the top, but definitely looks like you made an effort.
That means make up. Not all star level make up, but you definitely need make up on, a pretty lip, some shadow, etc. Not like you're going to prom per se, but I should definitely be able to see that you put some effort into your appearance.
For some kids, that means foundation. I don't mandate it, but for some, it is part of looking put together.
I'm not benching anyone for refusing to put on foundation, but this is a performance activity under lights. You need to have something on that keeps you from washing out.