"By the turn of the 1950s Rothko had arrived at the pictorial format which was to serve him for the rest of his career; horizontal lozenges of soft-edged color hovering in a large vertically oriented field. These clouds of color were seen by...
"The assertive flatness of the implacable field of red is emphasized by the linear vertical 'zips'. Rather than functioning as 'drawing' within space, these reinforce and delimit the space as a whole. White 'zips' in Newman's works also evoke...