BFI just posted a fantastic run-down of film colour systems, describing their top 10. It’s incredibly insightful and definitely worth the read if you’re at all into film.
The top 10 features colour systems such as Technicolor, Gasparcolor, Kodachrome as well as hand and stencil colouring among others.
Here’s an excerpt from the article talking about Dufaycolor (pictured above):
With its mosaic of red, green and blue colour areas known as a réseau, Dufaycolor was an additive system, that is, one creating colour in the same manner as, say, the modern red, green and blue pixels of a computer monitor. It’s even tempting to see its mosaic colour pattern, which blends at sufficient viewing distance into the intended colours, as a precursor of the modern colour pixel.
This complex process emerged in 1933, though was soon to become outdated due to more effective subtractive systems such as Gasparcolor, Technicolor, Kodachrome and, eventually, colour negative film. But this was not before making some of the most beautiful British colour films possible, including the famous abstract films by animator Len Lye, such as 1935’s A Colour Box, seen in the above frame grab. These and other BFI colour treasures shown here were documented by Professor Barbara Flueckiger in a joint project with BFI for her Timeline of Historical Film Colors.
Check out the full article here.