Spaz Stix Metallic paints are opaque colors that are loaded with "flakes" which really dazzle in the light, especially direct sunlight. Metallics will require 3-4 even coats, and the end result can be slightly lightened or darkened when choosing your backer color (we recommend white, silver, or black). While formulated for use on polycarbonate R/C bodies, Metallics will work well on just about any paintable surface