Don't even think about dark shirts if you're ever going to be wearing them with a tie. Just a bad idea unless you have a damn good idea of what you're doing. French blue is a nice color though. An ecru (light tan) would be good. Striped oxfords and the like can be fun. So to sum up the advice. Shades of blue, white or ecru and patterns thereof are ok. Everything else is no good for now? Thanks.