Halloween Costume: Mouse?

So for halloween me and my friends are all gonna be animals. Like with the headband, and like draw on nose and whiskers. One friends being a bunny, and the other a kitty cat. I'm going to be a mouse, I know I'm going to where mouse ears, a bow, v neck, and a short skirt. but what colors do you think i should have my outfit be? i know halloween is reallyyyy far away but we just want to figure things out because last year we were like trying to find costumes at the last minute. we're 13 by the way.