Composition with Red Blue and Yellow De Stijl. An encounter with fellow Dutch artist Bart van der Leck provided ground for Mondrian to exchange ideas. From van der Leck he received the concept of painting flat areas of pure color; a solution to Mondrian’s problem of coloring - he was then using color in what he considered an Impressionist way, which was too restless and emotional. In return, van der Leck adopted Mondrian’s concept of crossed vertical and horizontal lines as a basis for composition. These two technical elements are consistent throughout all of Mondrian’s work. Shortly after the formation of Mondrian and van der Leck’s
Charley Toorop Bergense School. Toorop befriended other artists, among them Bart van der Leck and Piet Mondriaan. In 1926 Charley Toorop went to live for two years in Amsterdam, where her painting became influenced by film. Frontally depicted figures stand isolated from each other, as if lit by lamps at a movie set. Her still lifes show kinship to the synthetic cubism of Juan Gris. From the 1930s onwards, she painted many female figures, as well as nudes and self-portraits in a powerful, realistic style. Well-known is her large painting "Three Generations" ("Drie generaties") (1941–1950; in the Museum Boijmans Van Beuningen, Rotterdam),