I have a 1980 grand prix and it has silver gauge cluster, and silver ashtray lid, and silver shift plate trim on the center console, and the silver on the console parts are faded..it looks like the silver pattern is going from side to side..how do fix the faded silver on them parts ? I can't figure out how pontiac did that back in the 1980s .it looks like a Brite silver. Any help would be greatly appreciated..