(n.) A painting or drawing in a single color; a picture made with a single color.

Maxwell triangle Munsell scale acrylic painting chromatic chromatic circle chromatic spectrum chromaticity diagram cold color circle color cycle color index color mixture curve color solid color spectrum color system color triangle colorific coloring complementary color cool demitint dichromatic encaustic cerography encaustic painting finger painting flower painting freehand fresco painting full color fundamental colors genre painting glowing gouache graphic grisaille half tint halftone harmonious hue cycle illumination illustration impasto many-colored matching medley metamer monochromatic monochromic motley mural painting oil painting painting painty parti-colored pastose photographic pictorial picturable pictural picturesque picturization pigmentary polychromatic polychrome portraiture poster painting primary primary color prismatic pure color rainbow scenographic scumbled secondary secondary color solar spectrum spectral spectral color spectrum spectrum color tertiary tertiary color the brush tinctorial tingent toning variegated warm wash wash drawing