The Art of Color

Johannes Itten was a teacher at the Bauhaus in the early twenties. He is known for is work on color theory.
Itten's approach to color theory was revolutionary because he looked at color not only in terms of the physics of how light is absorbed or reflected by matter, and not only in terms of how one color looks when situated beside another.
Itten also looked at how color affects a person psychology and spiritually. 

He believed that there were certain characteristics inherent in particular colors that would have a direct influence on how the viewer felt.

Great book.
The Art of Color - Johannes Itten