Before I read your whole question, I was gonna say Converse or Vans, lol. If you wanted to do Nike, they have the ones where one shoe has a mix of 4 or 5 different bright colors all over it. I like those because they don't match anything at all, so there isn't any worry with 'matching'. But, you can also get tired of those colors after awhile. You could also go the way of Doc Martens. They are a classic.
I would go with Janoskis but then I am a dude.
What Anya said.
It's hilarious, I have a pair of Vans, and 3 pairs of Nikey. And I used to have converse (but Vans look so much better).
Crocks.