I believe that we studied Jean Arp in either color theory or 2D class, not sure which one, maybe both. Arp was a German-French artist who worked with paper and sculpture. Arp was also a founding member of the DADA movement but some of his work is also classified as surreal. He is among of the first recognized collage artists and has helped to shape what is considered collage today. Arp focuses a lot on shape in both his sculpture and 2D works. His 2D works however show a lot of focus on color as well. For his time Arp was a visionary. His work could have been considered radical.