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Colour pervades life, stimulating the mind, vexing, and even pleasing at different times. For centuries man extracted colours from nature to identify and beautify his own culture and milieu. Preferences in colour observed in man-made environment, in garment, and in items of daily use reflect the psyche of individuals, and symbolises the aims of institutions, and even ideologies.

Colours used in consumer products must be fade-proof, enduring, and possess rich chromatic value to enrich its appearance. Consistency in hue of colour is vital in maintaining product consistency. To this end certain colours have been standardized globally by chemical specifications that classify them under numerical codes.