Since the beginning of his career, Ellsworth Kelly's emphasis on pure form and color and his impulse to suppress gesture in favor of creating spatial unity have played a pivotal role in the development of abstract art in America. A major influence on Pop Art, Minimalism, hard-edge and color field painting, Ellsworth Kelly’s best-known works are distinguished by sharply delineated shapes flatly painted in vivid color, such as Colors for a Large Wall (1951). His abstract paintings are inspired by the interplay of light, space, and color in the architecture around him. In contrast, Kelly’s automatic drawings feature delicate outlines of bodies and flora.