Organic lakes or tones shall not be used to fortify or sophisticate inorganic pigments. Substitution of similarly coloured pigments is not permitted.

A companies' corporate "sky blue" might need to be accurately specified for paint used on a Formula One racing car, coloured thread on a baseball cap, flat artwork for a television advert in Sydney, paint for a hand-painted advertising hoarding in New Delhi, ink colour for a trade ad in a Wisconsin newspaper printed on newsprint and a web site hosted in Tuscon viewed on hundreds of different type computers screens worldwide.