I think this is the way most manufacturers do it now - take a look under the hood of a metallic Ford sometime (the silver ones are the ugliest gray under the hood). Heck if I know why they do it that way - may have to do some digging - one of the guys that comes to breakfast on Saturdays will probably know why - he sells spray booths to repair shops (as well as serves as the local consulate for the Lotus Owners Group ; -).
Now in the old model making days it was the reverse, as you say - metallic base, translucent topcoat.
|