Back at the start of the 20th century you could get a Ford Model T in any color you wanted as long as it was black.
Actually, when the Model T first came out, black wasn't an option. It only came in grey, red, green and blue.
What reference do you have for that?
Ford used [You can get it in any color you want as long as it is black] in there 2003 centennial car & truck model advertisements.
McCalley, Bruce W. (1994). Model T Ford: The Car That Changed the World. Iola, WI, USA: Krause Publications. ISBN 0-87341-293-1.
While Ford did eventually go to only black (and did say "Any customer can have a car painted any color that he wants so long as it is black"), from 1909 to 1913 black wasn't an option.