Should all the groomsmen tuxes match?

From a purely aesthetic stand point, most people agree that wedding photos look best when all the groomsmen are matching. It makes the groomsmen look like they’re in a group all together and not just random guests. The groom however, does not need to match with his groomsmen. In fact, it’s quite nice when they don’t and the groom wears something to make him standout from the rest of the guys.