camaieu

Camaïeu is a technique that employs two or three tints of a single colour, other than grey, to create a monochromatic image without regard to local or realistic colour.

When a picture is monochromatically rendered in gray, it is called grisaille; when in yellow, cirage.

The term is also applied to monochrome painting in enamels. This technique uses a build-up of white enamel to create highlights and light areas. However, instead of using a black background, as in grisaille, transparent enamel is laid in first, beneath the whites. This technique is frequently used on snuffboxes, watches, and medallions.