This guide explains how colour works in nature and how it can be manipulated to make expressive paintings. After covering the more scientific aspects of colour theory, the author offers information which analyzes a subject in terms of local, tonal, reflected and shadow colour. He demonstrates how to prepare a palette and how to obtain a wide colour range from specific mixtures. He defines and discusses colour harmonies, complements, and contrasts and shows the reader how to use cool and warm hues expressively, and how to juxtapose harmonious or discordant colours to produce different psychological and visual effects.