Just sent an email to a local powdercoater with the paint specification for gunmetal paint.
If anyone wonders... it's:
Colour Name: 305 Gun Metal
Colour Code: AST 1301
Basecoat: (MBC) / 2K
Activator: DCH4074Q
I've decided on gunmetal when I get the RH turbo cup rims

jeey
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"Driving the R8 is like smearing honey into Keira Knightly!" - Jeremy Clarkson
"In principle, this car is too fast for my thoughts!" (Walter Röhrl about the 600+hp Audi S1 Sport)