Color—its optical properties, its physiological effects, its natural and human origins, its cultural and emotional associations—has been John Gage’s subject of choice for several decades, and no one has worked in this area more, or more fruitfully, than he. Gage’s most recent book is apparently narrower in scope but turns out to be more comprehensive in its claims than his Color and Culture: Practice and Meaning from Antiquity to Abstraction (New York: Bulfinch, 1993) and...