We have just had a gtr dropped in at my work, in the dark grey. I am repainting my car soon and I am seriously tempted to do the same colour scheme, the grey pearl, I'll leave all the plastics, but find the wheels (or as similar in 16's, gloss black) then paint my wilwoods the goldy/orange colour
Other than that I would paint it any kinda graphite grey, Audi dolphin grey is nice (lx7w is the code I think)