The term colorant refers to any substance that causes a color to change in or on another substance. The mixing of colorants when using three properly selected prime rays to obtain a wide range of colors may be subtractive, or additive. There are many different kinds of coloring, both organic such as plant or animal material, or inorganic including mineral or gemstone colorants, synthetic dyes and pigments. The most common colorants are dyes and pigment plants, plus a variety of transparent and translucent materials like academic aids and glass