The Pantone Matching System: Always Show Your True Colours
http://designorati.com/articles/t1/graphic-design/340/the-pantone-matching-system-always-show-your-true-colours.php

Bruno, Elisabetta
Designorati
2005

Abstract:

It can be very frustrating to see the logo you worked hard to create look deep blue on the client's letterhead, blue-greenish on his business card, and light blue on his very expensive envelopes. A way to prevent this is by using a standardized color matching system, such as the Pantone Matching System.