http://www.rivets.net/ (go to check stock to do a search) http://www.tandyleather.com/prodinfo.asp?number=137513&variation=&aitem=104&mitem=208 hope that helps
Buy regular rivets, and spray paint them before using them. then, any paint that rubs off when popping them, use a q-tip to paint them again. Even with prepainted rivets you'll still have a silver dot in the middle from the stem, so you'll probably end up q-tipping them anyway. Easy way to spray paint rivets: stick them into a piece of cardboard of something, and paint.