I have a 2001 A6 4.2 Pearl White, I don't mind my stock rims and size but would like to make the car "mine". I can't decide which way to go;
1) Chrome
2) Silver
3) Black
4) Gun metal
5) A mix of two different options ( i.e. Chrome/Silver )

So I need pictures of what is out there mounted on a similar car, or if some one is talented enough to chop them on my car I can send a picture to work with.
I really like this style of rim, similar would be ok as well:

 

well the classic chrome lip with silver back is what i roll on. To each his own but im not a fan of many black rims but on a white car it looks ok if done properly even the white on white would look nice if u can get them color matched.

 

Get a set of those new 42" and jack it to the sky! They're only $15k / rim, good luck finding a tire though. Maybe a tractor tire? In all seriousness I agree with pa4ul when he say's "to each his own". Shop around, narrow it down to a few and see if yo can find a configurator online so you can get an idea of what they would look like on your ride. I however am a fan of the black with chrome or machined lip, espically on a white or black vehicle. Also like pa4ul mentioned, if you could get something color matched that would rock! But again, it's all about what suits your style and what you are happy with.