Wally: ARTY! WHAT ARE YOU WEARING?!
Artemis: It's just a uniform, Wally
Wally: YOU CAN'T WEAR RED!
Artemis: Why not?
Wally: ANY COLOR BUT RED!
Wally and Artemis are in Star Trek uniforms (original series) for whatever reason you would like to think up.
But Wally is upset because Artemis has put on a red uniform. And you know what happens to people in red uniforms don't yoooouuuuu?