A two color process was invented by Percy Douglas Brewster in 1913, based on the earlier work of William Friese-Greene.
[1] In his first patent application, filed February 11, 1913, American inventor Percy Douglas Brewster described a new color film process: The exposure is made through a ray filter, preferably light yellow in color and adapted to cut off all the violet and ultra-violet rays of light.
[19] In April 1944, a syndicate was formed to purchase the rights to the Brewster Color process and use it to produce films at studios in New York and Washington, D.C.[20][21] Stanley Neal, member of the syndicate and owner of its laboratory, was mainly known for the production of industrial films and advertising shorts.
Though demonstration films received praise from members of the Royal Photographic Society for their "remarkable steadiness" and "extraordinarily good reds", this method failed to meet with commercial success.
It sought $100,000 in damages and an injunction, stating that they had infringed on patents for a "method and apparatus for color cinematography.