A large scale print in colours that you like, I hated the fabric for my first OBW but I liked the colours in it.
I don't like too many different colours as it makes the pattern too busy, but I have seen ones that do work, so personal preference there.
if you can get hold of a small hinged mirror to look at your fabrics it will help to choose.
http://fiberfantasies.files.wordpres...kalmirror4.jpg