Where to buy cute colorful bedding?

I'm looking for a new bedding set (sheets, comforter, etc) and am wondering where the best place would be to buy them. I am thinking of doing a red/orange/white/black color scheme. I want a patterned comforter but it is really hard to find patterned or multi-color ones that are actually cute. Can anyone recommend some good comforter sets or places to get them (haven't had much luck with target or kohl's)?