Orphism or Orphic Cubism, a term coined by the French poet Guillaume Apollinaire in 1912, was an offshoot of Cubism that focused on pure abstraction and bright colors, influenced by Fauvism, the theoretical writings of Paul Signac, Charles Henry and the dye chemist Michel Eugène Chevreul. This movement, perceived as key in the transition from Cubism to Abstract art, was pioneered by František Kupka, Robert Delaunay and Sonia Delaunay, who relaunched the use of color during the monochromatic phase of Cubism.