What I've had to do a few times is "remove" a rivet to see what color is on the underside of the head and shaft. In Hi-Tech, it is referred to as destructive analysis.
Jim
I was hoping to not remove it. Get a Dremel and clean it up or some evaporust or both.
Then paint with black or silver.
I have an ugly spare, though.
Ok, I'll take that one apart.
Bullitt68 -- I wasn't sure if 68s still had the plate. Be interesting to hear back.