AvantGo has developed a unique quadtone setting to be used on some illustrations and photographic images. The quadtone is made up of the four analogous blues from the Base Design Palette, which are Baby Blue, Lagoon, Marine Blue, and Midnight Blue.
The quadtone look helps control color intensity when more than one illustration or image is present. It is also used to differentiate the levels of illustration styles. Refer to the Illustration section for more details.