Mike Lights, Inc. 
Color Mixing
How do you choose right color? Take a look at the figures below and
see how Lee color filters can be mixed to produce white light. The
first degree in color mixing is to mix the three primaries. Every
two color combinations result in a third color. From three primary colors,
you get three new colors (2.degree). Take the three new colors, mix
them and once again you get three new colors (3.degree) and so on.
In all three figures below, there are three color combinations that will
produce a white light.
