I'm refinishing some Audi "swing" rims. What color silver (spray can) should I use to be close to OEM?

This stuff looks like it would work: http://www.autopia-carcare.com/wus-892181.html

There's also this: http://www.paintscratch.com/

And generic "Supra Silver" looks pretty close.

Also, if I paint the rims myself, any idea how much a bodyshop would charge to clearcoat lacquer or clear powder coat (4x) rims, or would they not even bother?