Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent practical disucssion of the use of color

This is one of three books by the late Helen Van Wyk all of which are very good. She has the gift of a teacher who can convey ideas simply and clearly. The book is filled with pages of examples in color which are practical and immediately useful. She gives examples of dozens and dozens of items and how to paint them. This is a great resource book for the artist. Check out her other two books also.