We think of color television as a fairly recent invention, but the first time color was shown on a TV screen was in 1929.
For a while you could buy an accessory for your black & white TV that was a see-through plastic cover. It was blue at the top, green in the middle, and brown at the bottom, so it would seem that you were seeing many scenes in nearly true colors.
This part right here is interesting. What could you do with some sort of color filter in the modern world?
The first commercial television broadcast as we know it was in London, 1936, to about 100 TV sets.