Color film was around almost since the invention of Photography in 1839 by Louis-Jacques Mande Daguerre (the Daguerrotype) and William Henry Fox-Talbot (in England) about the same time. Daguerre's process was popular at first, but Fox-Talbot's negative and print process finally dominated. In the 1890s, French and German experimenters used the Autochrome process to produce remarkably durable color images, and French inventors used various processes to produce color transparencies. It was left to American inventors, however, to produce the first durable (although complicated in processing) really practical color transparency film and process, Kodachrome, which was invented by two musicians who worked on the process in 1935 in a New York hotel room. (I wonder that they didn't destroy the hotel room, with all those chemicals and equipment). Anyway, Kodachrome became the standard, and the process was purchased by Eastman Kodak and sold for years under the Kodak name. In fact, Kodachrome only went out of production and Kodak stopped processing Kodachrome film in the past 10 - 20 years or so. Kodacolor, a color negative to positive color print process, was developed in the late 1940s or early 50s by Kodak. I used Kodacolor in the 1950s for photos of special occasions (my sister's birthday, etc.). In motion pictures, the three-strip Technicolor process was developed in Hollywood, and used three 35mm movie cameras all combined into one huge machine, color filters (red, green, and blue), and the lab had to add dyes, etc.-- it was all very complicated. The first color movie produced in Hollywood was a 10-minute (approximately) short film titled, "La Cucaracha." It was a musical piece featuring the Hollywood idea of a colorful Mexican musical interlude. Now, you get 3 college credits for having read all this stuff from my old course syllabus on the History of Photography. --Best Regards, AJ