Dalla Newsletter di Jerry Yarnell:
I need help with shadows. Do I mix the complementary color with the color of the object casting the shadow, or what mixture do I use when casting a shadow?
First, you do not have to use the complement to create a shadow color. A complement may work in some cases, but the best rule to follow is to always add a little purple (dioxazine purple) to the shadow being cast. For example, if you have green grass, mix purple with that green grass mixture to be your shadow color. If you used an earth tone for dirt add a little purple to the dirt mixture and that will be your shadow color. All shadows have purple. This is a better formula than trying to use complements. It will work every time.