Paint chips on RS6 5 SPOKE WHEELS

Looks like some one is trying to steal my Alloys, and damaged the paint on them in the process. came out today to find only 4 bolts in the front wheel, and the one that was missing is the one you have to use the special lock nut key on. can any one give the code for the touch up paint on these alloys, its a dark grey colour, i thinks these wheels are standard on the Black Edition
 
This is a picture of the problem on the paint
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Don’t know the color code, but I’d check at the stealers. They should know what they’ve sold.

Love those wheels & color. Are those 20’s or 21’s? I’ve been looking for these in 20”, but they’re hard to find!

Hope you’ll figure out a way to catch the *****, who chipped them & make him pay. The kind of people, who should be neutered on sight...