chiaroscuro, grisaille [Fr.].
[Pigments] Payne's gray; black &c 431.
Adj. gray, grey; iron-gray, dun, drab, dingy, leaden, livid, somber,
sad, pearly, russet, roan; calcareous, limy, favillous†; silver,
silvery, silvered; ashen, ashy; cinereous†, cineritious†; grizzly,
grizzled; slate-colored, stone-colored, mouse-colored, ash-colored;
cool.