The headlight molding does not get paint. From the factory, they had a polished aluminum finish.
The stone guard is a combination of both; partially polished aluminum finish and partially paint.
I used the argent paint from NPD which worked well for the grill and stone guard. Although everyone says the aluminum Mach 1 rocker molding also got argent paint, I'm skeptical. There was factory paint on the back of my rocker moldings and it appears to be a metallic charcoal. I used the black interior paint I got from NPD, which is also a metallic charoal, on the moldings and it's a pretty good match. (My Mach 1 is a Dearborn car from very late in the 1970 production, so that might have something to do with the paint color on the rocker moldings.)