The visualization shows the most used colors of 50 artists. Each artist has their individual color footprint. The shown colors are aggregated and size doesn't represent the actual usage of the particular color by the artist to reduce the complexity inside the application.
You can select each color to find related colors – ones that the artist often used together with that color or other artists frequently used together with that color. If you like a color, you can copy the tone or add it to a collection and export it later.