Albers, Josef.Interaction of Color. Rev. ed. Yale University Press, 1987. A concise work on how colors affect one another, by the Bauhaus artist.
Ball, Philip.Bright Earth: Art and the Invention of Color. Farrar, Straus & Giroux, 2002. An entertaining look at what colors were available to artists through history, and where they got them.
Kuehni, Rolf G.Color: An Introduction to Practice and Principles. Wiley, 1996. An introductory reference that explores the complexity of color as a science and as it relates to art, evolution, and perception.
Nassau, Kurt.The Physics and Chemistry of Color. 2nd ed. Wiley, 2001. Describes how chlorophyll in grass produces its green color, why the sky is blue, among other things.