As a rule, large surfaces are choosing lighter restrained tone and brighter, more saturated fragments used (Fig, mosaic, paste, etc.), with an overall calm interior diluted colored parts of small size. When using multiple colors should be chosen them so that they contrast in tone. This means that they must be opposites in the color wheel and mixing to form shades of gray. Such colors are accepted additional call to each other. Examples include a pair of dark red and dark green, light yellow and blue, etc. The combinations according to this principle is especially exquisite. Placed side by side, complementary colors mutually reinforcing, creating a single composition, in which opposites merge.