Just had a set of R34 GTR rims repaired which included repairing gutter rash (on the lip and the spoke which is a pain) and respraying. I think matching the colour of this rim is quite a difficult thing to do, but this repairer, through trial and error, has the paint code and it is a near perfect match.
Might save others a fair bit of time and hassle.
They are:
Matt Coleman
Wheel Solutions
Off Church St Richmond
0412 553455
I've used them twice and both times great results, and I have no interest in this other than to be helpful.