After the war, a new artistic trend develops in France, inspired by the juxtaposition of color-filled rectangles previously practiced by Bissière. With Poliakoff and later Atlan, these elementary areas grow, becoming flexible and very colorful polygons. This movement close to CoBrA will be called Tachisme meaning art of blobs. Mark Rothko is not convinced of a spirituality in this trend.
Inspired by the cubist vision of Braque, de Staël gradually abandons from 1947 his style composed of networks of entangled bars. He works on a canvas 204 x 405 cm on which he positions flat areas of muted colors. After more than two years of preparation, this giant composition is dated 1950.
Composition 1950 was sold for € 4,2M including premium by Sotheby's in Paris on June 3, 2014. It comes in the same auction room on December 5, lot 12 estimated € 4,5M.
This phase of his style is ephemeral. On March 26, 1952, this hypersensitive artist is dazzled by the artificial colors in the Parc des Princes during one of the first football games played at night. For three years he drowns his memory in the brightest colors of the Côte d'Azur and Sicily, in a frenzy of creation that ends in family breakdown and suicide.