Circles. Swiss Johannes Itten was a pivotal member of the Bauhaus. From 1919-1923, he taught a required intro course that focused on form and color. He associated certain colors with specific emotions. His book The Art of Color was a synopsis of his teachings at the Bauhaus, and was groundbreaking in its study of colors’ impact on the viewer. Like other artists and theorists before him, Itten studied colors scientifically as well as artistically.