The Crystal range of paints is a special Pearlescent that reacts in different ways depending on the base colour. Apply over White and you will get a Pearl with a hint of colour, over Black you will get a deep metallic that is just like a Crystal Gemstone! For best results, spray at 10-15 PSI over a base coat of either PL30 Jet Black or PL02 White. CR04 AMETHYST (PURPLE)