COMPOSITION, by Piet Mondrian, 1921, Dutch, De Stijl, Neoplasticism, oil paint on canvas. In the 1920s, the artist created nonrepresentational geometric work with horizontal and vertical black lines over white, with selects areas between lines painted with color. He worked in this mode for over a decade. This early 1920s work used lighter hues of red, blue, or yellow by mixing colors with white. In time he eliminated such tonal colors for full intensity primary colors, red, blue, and yellow (BS