I dont think the roof/ pillars painted black look good. doing that wreks the lines of the car imo. I do like the roofs that are painted just up to it though. where it is just the roof painted so it looks like a glass roof. that way keeps the lines intact.

 

I like the silvers with the dark grey tops looks good, I am thinking of doing this myself. I like the white and black as well but not every collor can pull it off.