Theory of Colours was created in 1810.

The ISBN of Theory of Colours is 0-262-57021-1.

Color theory was originally formulated in terms of three "primary" or "primitive" colors which were red, yellow and blue. These colours were believed capable of mixing all other colours.

Additive and subtractive are colour theories. Subtractive theory means when we add Primary colours (red, Blue, Yellow) we get black. But in Additivee colour theory primary colours are red, green and blue. Mixing those we get white light. The aditive colour theory is used in Photography and primary colours are also red, Green and Blue (RGB)

In theory, red and green colors make yellow color