A color is selected from the basic color area or the mixed color preserving area, and the circle of the mixed color work area is designated, and a mixed color is formed in response to overlapping of the Venn diagram. 基本色領域、または混色保存領域より色を選択し、混色作業領域の円を指定し、ベン図の重なりに合わせて混色の生成を行う。 - 特許庁