Since time eternal man has always tried to make his surroundings more and more beautiful. In this endeavor, colour plays a very important role. Colour, a coating on any surface, is a major factor for distinguishing and beautifying. Previously man used natural colours and decorated his surroundings himself. Soon colour became a major industry, as preference of coatings manufactured by professionals increased. As time passed and man advanced scientifically & technologically, features such as life...