Final answer:
An artist can create an illusion of depth using only color by varying the intensity of the colors.
Step-by-step explanation:
An artist can create an illusion of depth using only color by varying the intensity of the colors. By using warmer and brighter colors in the foreground and cooler and duller colors in the background, an artist can create the perception of depth in a two-dimensional painting. Additionally, an artist can use techniques such as shading and highlighting to create the illusion of three-dimensional forms on a flat surface.
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