Hi Dearborn,
I am doing the same thing to my 1970 mach 1. Cant really find anybody who knows for sure. I have the rockers that have the Mach 1 embosed into the rocker itself. Nobody can tell me if that was chrome or painted argent silver. The best I have found so far is that the rockers are painted dark argent and the lettering is painted light argent.
Ray jump in any time soon.
Thanks Dave