Color Correcting WSheel by Pierre René. Palette consists of four specialized shades for the face. Each has an individual purpose. They each deal with imperfections that require masking. The cream is easy to apply, and blend esaily with the complexion.Purpose of shades:Yellow - to reduce redness with rednessPurple - to mask yellow spots.Green - to mask spots and redness.White - to brighten selected parts of the face.