3M Dichroic Glass Finishes help achieve the shimmering, colour-shifting effect of dichroic glass at a fraction of the cost. These innovative adhesive finishes feature a colour changing effect depending on the viewer's angle and the angle of incidence of light, with simple installation and easy maintenance. The premium-grade, polyester films are non-metallic,non-conductive and non-corrosive and include a hard-coated surface laye r to resist scratching. They're available in cool (Chill) and warm (Blaze) tones and can take on a different look depending on mounting surface colour, viewing angle and lighting. They allow light and view transmission.