Color, is the most valuable means so that an architectural work transmits the sensations that the architect wants the user to perceive in certain spaces. If the color is used in the right way and with a great deal of knowledge of its nature, it might serve to favor, highlght, disguise or even hide, to create an exciting sensation or a calmed one so that it denotes temperature, size, depth or weight. Every color has a series of properties that make it change its aspect and that defines its final look. This book provides useful and practical color advices to be used whether in exteriors or in interiors and shows the importance of its use for the creation of spaces with its own personality.