but their ranks do include such unexpected delights as john chamberlain 's tiny `` howling excess , '' a squirming mass of gold , silver , purple and orange squiggles and cy twombly 's `` untitled -lrb- proteus -rrb- , '' a jagged gasp of irregular strokes of oil stick that seems to metamorphose -lrb- like the greek sea god -rrb- from vegetable to animal form .