More ideas from Sonja
You could have the men wear grey suits with subtle/tasteful polka dots - on the tie, the pocket thing or the vest... or you could have some crazy t-shirt under that you can show during pictures, so they are the human dalek things.  Just options, but definitely stay classy!

A wedding for the girly girls: feminine, mint + pink, with vintage touches and so much pretty. From Frenzel Studios.