iOS 7 on black iPhone, opinions?

I'm thinking of buying an iPhone 5 this week, I would normally go for the black model without thinking twice (I currently have a black 4 and before that had a black 3G) but iOS 7 seems to have such an emphasis on white that I'm wondering if a black 5 would be a bad choice.

Anyone running the iOS 7 beta on a black phone, I'd love to here your opinion of the contrast (clash?) between the white software and black hardware..