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.