Relationship between avant-garde art and American pop culture brush strokes and in techniques partially dictated by chance, such as dripping or spilling the paint directly onto the canvas. Examples of this include Jackson Pollock dripping commercial paints on raw canvas to build up complex and tangled skeins of paint into exciting and suggestive linear patterns and Willem de Kooning used extremely vigorous and expressive brush strokes to build up richly colored and textured images. The second category of Abstract Expressionism is represented by a variety of styles ranging from Color field, to Lyrical abstraction; delicate imagery and fluid shapes and fields of color included in works by Clyfford
Canvas damaging to the fabric of the canvas than the use of oil paint. In 1970 artist Helen Frankenthaler commented about her use of staining: "When I first started doing the stain paintings, I left large areas of canvas unpainted, I think, because the canvas itself acted as forcefully and as positively as paint or line or color. In other words, the very ground was part of the medium, so that instead of thinking of it as background or negative space or an empty spot, that area did not need paint because it had paint next to it. The thing was