Even in black and white, this photo of the late Duke of Windsor provides a good idea of his sartorial eccentricities. We here at The Average Guy's Guide to Style are certainly not suggesting something so outlandish for you.
But don't fear adding a little bit of pattern to your wardrobe either. An item like this subdued houndstooth jacket -- modeled here by that notorious jet-setter, bounder, and cad the Prince Ulrich von Boffke -- will add a bit of visual interest and flair to your wardrobe without going over the top and straying into more flamboyant territory. Not that there's anything wrong with that!
Shoes and socks are another place where average guys can shake things up a bit and add some pizzazz to their appearance. Suede wingtips along with a subtly striped pair of charcoal socks are sometimes just the ticket. Tasseled loafers, too, will work equally well with dress jeans, khakis, or creased wool pants like those above. Just make sure keep it fairly simple in relation to the rest of your clothes that you put on in the morning. And be certain to match your belt as closely as possible to your shoes.