On this 340 i used(rattle can) satin black. If you look at the NOS set, even from the factory the right side is slightly glossier than the left!! This NOS set i would say is the black plastic, not painted. I was told by the guy that restored a set for me that the black sets came 3 ways from the factory, 1) black plastic, 2) black plastic painted black, for better matching, 3) light colored plastic painted black. Of coarse at the factory all the pieces would be separate and easy to paint.