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
Kunst zij ons doel were not well represented. Prominent members of 'De Groep' were: Jan Hendrik van Borssum Buisman, Jules Chapon, Jac Clay, Poppe Damave (chairman), Edgar Fernhout, Frans Funke, Cor Hak, Kees Hak, Anton Heyboer, Marjan Jaspers, Roelof Klein (sculptor), Bart van der Leck, Albert Loots, Jan Meijer, Hans Mulder, Wim Oepts, Kees Okx, Piet Ouborg, Jaap Ploos van Amstel, John Rädecker, Georges Robèr, Charles Roelofsz, Arie Schouten, Wim Schuhmacher, Bert Schutter, Wim Steijn, Levinus Tollenaar, Charley Toorop, Frans Verpoorten, and Jan Wiegers Members were Ben Andréa, Albert Arens, Truida Baaren-Ruysenaars, Nel Bakema, Harry Balm, Elizabeth Frederika van der Ban, Bauk Cornelis Betzema,