What colour cases/covers would go with a white iPhone?

I'm getting an iPhone 4 for my birthday, ( ik it's not he newest but it's for my 13th ) and I want a white one but the thing is, not all colours go with the white one? So I gotta decide before 2 months, ( cos that's my birthday ) and I'm not sure to get the white one or the black one?

Your fave color!

Purple, red, pink

White, pink, green or blue, http://www.onecase.co.uk/catalogsearch/result/?q=bingo or http://www.onecase.co.uk/brand-case/element-case.html

How about this kinds, very special design, i bet you will like it so much,
http://www.victoriasdeco.com/KEC-DIY-iPhone-4-Case-Cross/M/B007VL9JWG.htm
http://www.victoriasdeco.com/KEC-DIY-iPhone-4-Case-Cross/M/B007VL29TG.htm
http://www.victoriasdeco.com/KEC-DIY-iPhone-4-Case-Cross/M/B007VL1PSC.htm