The Great War in Color
The Lumière brothers of France are best-known for their development of the first practical (by 19th century standards) motion-picture camera, but did you know they also developed a method of taking color still photos as early as the World War I era?
(more in the complete post)
Unlike Sergei Mikhailovich Prokudin-Gorskii, whose color photography of the same era involved taking three separate photos (with everyone sitting VERY still!) and then compositing them, the Lumières method involved dyed grains of potato starch scattered on the negative before it was exposed, allowing the picture to be captured in a single shot, although with a large amount of grain visible.
There are also a couple of other methods of color photography shown (none as effective as these two) on The Great War in Color. Enjoy!