What was the date factory colored rims first appeared. Was it late in 30 or sometime in 31? What colors would have been available? How were they painted? Would they have been dipped as I suspect all the black rims were?
Les, If your interested in that kind of detail, you would like the new MAFCA paint guide. It has a lot of finish details and the best guess paint chips to date of what each color looked like. http://mafca.com/cart/index.php?productID=129