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here i found this:

"Woman with a Cat" (Kunsthalle, Hamburg). Motionless, hierarchic, and frontal, this colossal creature seems made of some undefinable rubberized substance. The powerful large nude woman, painted in grisaille, is composed of spheres, cones, and tubes. She leans against billowing pillows - one off-white, the other a black-and-yellow diamond pattern. A yellow blanket protects her lap, upon which rests an open book and a cat. Her mane of black hair covers half of her white spherical face. The stark simplicity of the composition is matched by the reduced palette of red, yellow, black, and white."

erm he used pure colour and simplified his forms into geometric components of cone cube and sphere