"Looking to color correct or customize your foundation? With our new PRO.color mixers, you will have endless possibilities to create new foundation shades, match them and correct them. White: Lightens the makeup base. Yellow: Provides a yellow undertone Perfect for bases that are too pink or neutral. Orange: Darkens the tone of the makeup base. Perfect for bases that are too golden or cold. Blue: Changes the tone of the foundation to a neutral tone. Perfect for bases that are too warm."