Painting the Interdimensional Traveler - ZBrush Creature Design: Creating Dynamic Concept Imagery for Film and Games - page 293

Creating Light Gradients
Now we want to create some more visual interest by creating a warm and cool color contrast in the lighting
of the image. The image as it stands is lit with a single white key light, a white rim light, and a purple in-
cidental glow. To create a more interesting image, we will introduce a cool cast to the key light and a purple
cast to the fill. By breaking up the color temperature across the image, we give the eye more variation and