N variegation, colors, dichroism, trichroism, iridescence, play of colors, polychrome, maculation, spottiness, striae, spectrum, rainbow, iris, tulip, peacock, chameleon, butterfly, tortoise shell, mackerel, mackerel sky, zebra, leopard, cheetah, nacre, ocelot, ophite, mother-of-pearl, opal, marble, check, plaid, tartan, patchwork, marquetry-, parquetry, mosaic, tesserae, strigae, chessboard, checkers, chequers, harlequin, Joseph's coat, tricolor, variegated, many-colored, many-hued, divers-colored, party- colored, dichromatic, polychromatic, bicolor, tricolor, versicolor, of all the colors of the rainbow, of all manner of colors, kaleidoscopic, iridescent, opaline, opalescent, prismatic, nacreous, pearly, shot, gorge de pigeon, chatoyant, irisated, pavonine, pied, piebald, motley, mottled, marbled, pepper and salt, paned, dappled, clouded, cymophanous, mosaic, tesselated, plaid, tortoise shell, spotted, spotty, punctated, powdered, speckled, freckled, flea-bitten, studded, flecked, fleckered, striated, barred, veined, brinded, brindled, tabby, watered, grizzled, listed, embroidered, daedal, naevose, stipiform, strigose, striolate, (iii) PERCEPTIONS OF LIGHT.

For further exploring for "trichroism" in Webster Dictionary Online