Dave,
I'm not sure if the bricks are painted or red clay (I'd guess red clay). The plastic has a very slight texture. When I close my eyes and run my finger over the area, I can't feel any scratches from the bricks (although I think there will be some visible scratches once/if I get the brick coloring off). I do have a number of detailing products, ranging from polishes to cleaners to trim restorers, etc. I'm not afraid to buy something else if there are any good recomendations. Replacing the mirror would be a last (and probably costly) resort.
Thanks,
Craig