What colour shoes and bag would match this dress?

I really like this dress ... a href="http://www.asos.com/Asos/Asos-Pleated-One-Shoulder-Dress-With-Corsage/Prod/pgeproduct.aspx?iid=1468040&cid=8857&Rf-800=-1,100.000&Rf-300=1331&sh=0&pge=0&pgesize=200&sort=-1&clr=Grey" rel="nofollow"http://www.asos.com/Asos/Asos-Pleated-On…/a .. the grey one! and i want it for my school leavers summer ball, but im not sure what colour shoes and bag would go with it?