^... ???

well, I think the gray would look good. The GTR has gray lower moldings.

I actually like the look of carbon fiber on black. It's subtle yet only noticeable from certain angles and if you're looking for it.

http://i42.tinypic.com/iwi5vo.jpg

Bad example I know. And this car's body panels are all carbon fiber except for the rear quarter panels.

I agree, CF on black is outstanding

Imo if you dont want something permanent go with vinyl, its cheap and easy to install. Okay maybe not easy lol since your gonna fo the fangs and rear, but it will keep you busy for sure. Haha it took me 45 mins just to do the rear. Oh and i have flat black.

If you put color accents in the front and the back without having any accents on the side, I think it would look out of place (disconnected).
So if you put for instance any red on the front and back, that design should follow through and you would need some red accent on the side as well.
Any color you would use on black would be making it a focus point, which is the opposite from the black out fangs.