Maybe this will help. In this photo, from the top down, you have:
NOS bright windshield trim
44-year old bright windshield trim
faded black anodized coupe quarter window trim
The quarter window trim on a coupe is partially covered by a rubber gasket. You can see the part that was exposed to weathering is almost completely free of the black color. The part that was under the rubber gasket is black, and has a little film of dirt. The very bottom edge, that went over the pinch weld, is completely black. The underside is black, with a little dirt.
It's hard to tell from the photo (i-phone) but the NOS bright trim is a little brighter than the 44-year old bright trim, which is a few shades brighter then the faded portion of the black trim.
JR