Classic black. I personally thing mirror looks pretty gay on almost anything. Check this out (my bright red car w/ tint):
http://invision.aleromod.com/index.php?sho...1627&hl=illegal
My back window doesn't look bad. I mean, you can see the black dots and the defroster, but not from a distance, and you have to expect a little of that. If you find a good place there won't be much, just a little outline.