''Color Psychology and Color Therapy: A Factual Study of the Influence of Color on Human Life'' is a seminal book written by Faber Birren, a pioneering American color consultant and theorist. The book bridges historical folklore, medical science, and applied psychology to evaluate how color impacts human biology, emotion, and behavior.

Birren organizes his text into four distinct parts:
Part 1 -- Historical and Cultural Background: Explores how ancient civilizations utilized color in spiritual practices, symbolism, and primitive medicine.
Part 2 -- The Biological/Scientific View: Examines the electromagnetic spectrum, looking at how different wavelengths of light physically affect plants, animals, and human physiology.
Part 3 -- The Psychological Impacts: Delves deeply into how the human perception of color shifts mood, triggers psychological responses, and interacts with personality types.
Part 4 -- Visual and Practical Application: Focuses on the mechanics of the human eye and shows how functional color choices can reduce eye strain, minimize fatigue, and enhance safety in corporate and public settings.