Colour always presents a special challenge to the watercolourist seeking to make the best use of the available materials. A proper understanding of the function of colour in composition is essential - colour can be used in many ways to achieve a variety of effects. This book shows how to use colour, how to mix colours, how to contrast and complement them and how to achieve textural effects. Throughout, the book is illustrated with step-by-step processes and finished works. Every process is described in detail, providing full explanations of the techniques of the watercolourist.