What is the unique feature of 'color' as related to art fundamentals?

The unique feature of 'color' as related to art fundamentals is its correspondence to lightness and darkness. This relationship is integral to how color is perceived and is often referred to in terms of value. Value refers to the relative lightness or darkness of a color, which plays a crucial role in creating depth, contrast, and mood within a piece of art. Artists manipulate value to draw attention to certain areas, suggesting volume and three-dimensionality, and to evoke specific emotional responses from viewers. By expertly balancing light and dark colors, artists can enhance the visual impact of their work and facilitate a greater understanding of form and space within a composition.