The Prismatic colors can be used to create unique customized cars, trucks and polycarbonate/Lexan bodies. This paint changes color from 7 color Spectrum to Chrome. For use on injection plastic kits, a primer is necessary. ALC304 or ALC305 can be used, followed by ALC303. Plastic primers should be lightly polished with 1000/1200 wet-or-dry sandpaper ot give a less absorbent smooth surface.