Yeah i used grey plastic primer then painted them black, not really sure about the drying time i used a hairdryer so that i could get a layer on then wet and dry sand it then do it again to achieve a really nice smooth finish, my grills are 3 coats primer, 2 coats gloss black and my fog rings are 3 coats primer, 3 coats colorado red and then 2 coats of clear lacquer. Dont do what i did though i stupidly asked my dad how much paint i'd need. he was wrong

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Colorado Red 07 Plate ST
Mountune CAIS - 60mm Throttle Body - Full Resonated Milltek System - Bilstein B12's - 300mm front discs - Gloss Black Team Dynamics Pro Race 3's - Tints - Red-Black DMB Badges and loads of eBay stuff...