You can go back into your appearance afterwards, change your uniform settings to your sock preference and save. However, it's only good until the next time you go into the loadout screen and it barfs all your equipment back on.
I'm using a Rogers Hornsby model, and it's stupid to have to continually alter his appearence they way I want it. My Ballplayer clearly didn't make it out of beta mode before they had to release the game.
RTTS is busted