This website is described as an "interactive color experience that explains color theory and shows how to use it in design through examples and exercises" and it is based on a book by the same name. Visitors can go through the eight sections in sequence, which is recommended, or they can scroll over the circles in the "Navigate by Section" to go directly to a topic. "The Power of Color", the first lesson, is about how color affects mood, and visitors can see this for themselves when given the chance to change the colors of a Van Gogh painting to grays, then blues, and back to its hot reds and yellows. The "Color, Contrast and Dimension" lesson allows visitors, using colored blocks, to change their colors so they seem to fade into the background or come into the foreground, based on the percentage of color they have in them. An exercise on hue, using a Robert Henri painting, gives visitors the opportunity to change the hue of some of the colors in the painting, and see how it affects contrast.