Pollock finished this work by applying a matte layer of black gouache—an opaque watercolor—over sections of transparent color, creating an interplay between light and dark. Small, double-circle shapes across the right side of the sheet may have been created by stamping or tracing metal washers or some other circular object.
Gallery label from Jackson Pollock: A Collection Survey, 1934-1954, November 22, 2015–May 1, 2016.