“Following the premises of one of William Friese-Greene’s systems, this two-colour subtractive process required that two reels of film be printed in parallel through a lens fitted with a prism that split light in two directions, through red and green filters respectively. The two negatives were then printed on a positive coated with emulsion on both sides, tinted green on one side and red on the other. In 1935, after the success of Technicolor, Brewster Color introduced a three-colour system with the addition of yellow tinting, with no success.”
(Cherchi Usai, Paolo (2000): Silent Cinema. London: BFI, p. 35.)
“Although Brewster Color seems to have been used commercially there does not appear to be any reference available regarding specific pictures or studios that made use of it.”
(Ryan, Roderick T. (1977): A History of Motion Picture Color Technology. London: Focal Press, p. 72.)
Alt, Dirk (2011): “Der Farbfilm marschiert!” Frühe Farbfilmverfahren und NS-Propaganda 1933-1945. München: Belleville, on pp. 43–44. (in German)
Cherchi Usai, Paolo (2000): Silent Cinema. London: BFI, p. 35.
Layton, James; Pierce, David (2015): The Dawn of Technicolor. Rochester: George Eastman House, on pp. 61–62and on pp. 63–64.
Ryan, Roderick T. (1977): A History of Motion Picture Color Technology. London: Focal Press, pp. 72-75.