Basic Colorwheel

Primary colors are: Red,Yellow and Blue, and when you mix, for example: Red and Blue, you will get Purple, and Purple will then become a secondary color, as well as Orange and Green are.

Green and Red are each others opposite color, which means that they also neutralizes each other, so if you have red spots on your skin, you can take green make up and put it on your red spots and -Voila! Your red spots are gone, at least probably, it’s true, but of course it’s not really that simple, in one way it is, but on the other hand it’s not, but it’s a start, and if you got a very distinct blue-green vain or bags under your eye, you have to find some makeup with red-orange pigment in it to apply over for the bags or the vain to look less blue-green, to become neutralized.