In the last decade there has been a huge increase in research into color related phenomena, matched by a large number of new technological applications of commercial value requiring a fully revised and updated edition of the first book. This second edition covers the areas where chemicals or materials interact with light to produce color, a color change, or luminescence and where "colored" compounds are used to transfer energy or manipulate light in some way. Emphasis is given to the applications of such chromic phenomena in newer developments in cutting edge technologies and on the future technological applications of these and other color related phenomena. It is of interest to industrial chemists, professionals, postgraduates and recommended reading for color technology courses at academic institutions.