Rainbow A Green Magenta Blue is a CBS premium plus dichroic coating. This coating is applied to Uroboros COE 96 colored glass Straw. Rainbow A Green Magenta Blue fires to hot pink to turquoise rainbow colors in 1 inch stripes. As the dichroic coating breaks up during firing the colored glass shows through. This glass is coated specially for Dichroic, Inc. This coating is offered in 4x4 inch squares only. Please Note: Photos of this glass show mostly transmitted colors of the coating rather than the reflective colors.