My major in college is, I'd venture to say, 99.5% male dominated! I'm a sports management major, and it's very tiny, so since I'm one of the only girls, I can get away very easily with a baseball hat, hoodie and sweats but a lot of the times I like to do it a bit more. Even if I am in sweats and a hat I still like to throw some on. I do more muted eyes just because I think I might look a little too "come here, boys!" if I did my more glam ones. Some girls do think it's "trying too hard" or "stuck up" (<- that was a favorite of mine!) but I just generally love doing my makeup and feel better when I have it done.
I also worked in the NHL as an internship this past season, and let me tell you, I was shocked! There were more females, yes, but they all seemed to want to blend into the "guy" environment. They looked at me and my friend as if we had 4 heads when we'd put on lipstick before a game, during which we interacted with the public and players as our job! It was intense. So basically I know how you feel, and I find it very interesting. I haven't figured it out yet, but it's alright, I'm gonna keep wearing it and having a ball!