Vinyl is a thermoplastic resin that is heat sensitive at temperatures greater than 140 F. Above this temperature the vinyl will start to soften and can warp. Selected pigments with heat reflective properties have been used to formulate Enviro Color Coating™ to reduce heat build-up and maintain a low component material temperature that protect against warping. The ability to reduce temperature build-up for dark colours allows manufacturers of vinyl windows to offer a much wider range of colours than could be previously offered.