Sometimes sticking to the primary colours is the best choice. Yellow and blue are two wonderful colour combinations. They make me think of the sun and the bright blue sky on summer's day. What could be more wonderful than that?
As per usual I find that mixing vintage items with current ones makes for a great outfit combination. Today at work I was talking to someone about how I prefer shopping at vintage/thrift stores because you get unique items that no one else has. Yet, I should note that I actually prefer mixing vintage and current. It gives more options for everyday outfits, and it helps add a little modernity to every day life even thought I'd rather be living in a different era.