These expressions are realized through diverse mediums, from acrylic on canvas paintings and ink on paper, to intricate installations and video art. (athrart.com)
From 1968 on, he worked in acrylic on canvas and paper, reducing his palette to brown, gray, and black. (nga.gov)
Gorgeous graphite on acrylic on canvas - amazing colors and richly layered and textured. (chairish.com)