Gasparcolor

Gasparcolor was a color motion picture film system, developed in Berlin in 1933 by the Hungarian chemist Béla Gáspár,. It used a subtractive 3-color process on a single film strip, one of the earliest to do so.
During the 1930s and 1940s, it was used primarily in animation, notably by Oskar Fischinger, Len Lye, and George Pal. It also saw use in live-action film, including "Colour on the Thames".
William Moritz’s article, from his lecture at the Louvre, Paris, gives more detail about this history of this color process. Because of the darkening political climate in Europe, his Hungarian-Jewish wife Elly Tardos-Taussig died by suicide; Gaspar eventually moved to Hollywood and sold his patents to Technicolor and 3M.