On the european MB's the color code of the chassis is displayed under the hood. The plastic door and fender panels, the skirts and the front & rear bumper are painted in a contrasting color that is HALF matt. The color code of these contrast colored parts are not to be found on the european cars, but are occasionally stuck on the inside of the door and fender panels.
The color codes of these contrast colored parts are fairly standard and may vary a tint or 2,3/4. The body shops in europe have these color codes in their computer and will spray a sample paper to see what the exact tint of the color has to be...
Just be sure that he uses the right contrast color code (not chassis color code) and that he paints it half matt (no clear coated, shiny finish).
with a minor 600+k