67 barracuda argent

I have very nice OEM parts stored here. If I thought pics of them would help I would drag them out. The argent on that tail panel is about the same as used in grille surrounds.
The argent on the tail lamp lens bezels is darker. I have painted all 3 pieces across the center of the tail the same darker shade before and will again. Uniformity and as you stated, the darker just looks better.
I've seen a few examples of grille surrounds painted body color. I like it. That perimeter chrome gets the illusion of being a very small trim applied to a more complete header panel. If I could get rid of the texture on those tail pieces I might try the same treatment there too.