In 1935, Kodachrome was introduced, followed by Agfacolor in 1936. They were intended primarily for amateur home movies and "slides". These were the first films of the "integral tripack" type, coated with three layers of differently color-sensitive emulsion, which is usually what is meant by the words "color film" as commonly used. The few color films still being made in the 2010s are of this type. The first color negative films and corresponding print films were modified versions of these films. They were introduced around 1940 but only came into wide use for commercial motion picture production in the early 1950s. In the US, Eastman Kodak's Eastmancolor was the usual choice, but it was often re-branded with another trade name, such as "WarnerColor", by the studio or the film processor.
http://www.youtube.com/watch?v=qrRRhoS3KFkThe TBR site does not allow a user to cut and paste anything. At least from my computer.
The site adds all kinds of fonts and size html that seems to come out of nowhere.