the difference between additive and subtractive color mixing
ADDITIVE color mixing uses red, green and blue (RGB). SUBTRACTIVE color mixing uses cyan, yellow and magenta (CYM). The primary colors in the SUBTRACTIVE coloring system are the secondaries of the ADDITIVE color mixing system. These two systems of color mixing are the basis of all film and video color production.
There are two main types of color mixing: additive color mixing and subtractive color mixing. Additive color mixing is creating a new color by a process that adds one set of wavelengths to another set of wavelengths. Additive color mixing is what happens when lights of different wavelengths are mixed.