Stephen Quiller has his own theory for the uses of color in artwork. It is easy to read, follow and has lots of examples. These examples include poor choices, as well as good ones, which helps the artist to distiguish by visuals, the difference. An excellent reference for working and learning artists. It makes quick work of the confusion regarding complementary, secondary and tertiary colours and shows the direct co-relations. It also comes with a wall poster reference to the Quiller colour wheel. Colours are listed by standard commercial names which makes it easy for the artist to locate the proper colour with which they wish to work. All sorts of little hints to help the struggling artist handle media more easily.