The plastic panels are painted with an electro-static procedure where you connect voltage to the panel and ground the spraygun. Using special paint with carbon in it, the paint doesn't want to stick to plastic so the paint has carbon (steel has carbon already) This procedure greatly reduces over-spray and paint that goes out the exhaust fan into the atmosphere.BUT--you get a panel that will have static build-up. If you could scratch through the top clear coat and get a bolt into the carbon (colored) part of the panel you could ground the carbon,stopping static build up, those rubber washers make things worse!