Grisaille

Grisaille ( /ɡrɨˈzaɪ/ or /ɡrɨˈzeɪl/; French: gris 'grey') is a term for painting executed entirely in monochrome or near-monochrome, usually in shades of grey. It is particularly used in large decorative schemes in imitation of sculpture. Many grisailles in fact include a slightly wider colour range, like the Andrea del Sarto fresco illustrated. Paintings executed in brown are sometimes referred to by the more specific term brunaille, and paintings executed in green are sometimes called verdaille.