Juan Gris , Portrait of Josette Gris, 1916. One of Gris's greatest achievements, the Portrait of Josette is based on his studies of Corot and Cézanne. He integrates foreground background elements on 1 plane. This feat is accomplished primarily thru color rhythms that unite differing spatial planes. The blacks, employed, to signify bosom, derriere, leg, as well as the shadow of the figure, all occupy places on the forward plane.