When painting,
Frankenthaler uses the canvas as a vital part of the painting,
bringing it into the foreground instead of using it only as support
for the paint. This process, called "staining," uses a watercolor-type
paint that bleeds into a cotton-based canvas, then essentially
becomes one with the canvas to create a highly unique work of
art.
Unlike most artists who cover the canvas beneath their paints,
Frankenthaler uses the canvas as a medium. She is known to have
'invented' a style now called color-field art by deliberately
using that technique to create huge paintings.