Delaunay, Sonia Terk (1885-1980), Russian-French painter and designer. Inspired by the forms of cubism and the colors of the French painter Paul Gauguin, the Dutch painter Vincent van Gogh, and the Orphists, she developed a style after 1910 based on the juxtaposition, or "simultaneous contrast," of bright prismatic colors. She exhibited paintings, fabrics, and bookbindings in this style, and she also created costumes for theatrical productions. Delaunay became a fashion designer in the 1920s, when her brilliant hand-painted fabrics revolutionized the design of textiles. Her later style, after 1940, became more economical and delicate, particularly in gouaches that carried her color experiments to new levels of refinement.