In literature, the term "dark chocolate" is often employed as a vivid color descriptor to evoke a rich, warm, and earthy brown tone that carries both tangible and atmospheric qualities. Writers apply it to a variety of subjects—from the complexion of a person ([1], [2], [3]) and the surface of objects like paper and shells ([4], [5], [6]) to natural elements such as water or soil ([7], [8]) and even the wings of insects ([9]). This usage not only conveys the physical appearance, suggesting a deep and robust hue, but also often sets a mood of subtle warmth and complexity, thereby enriching the imagery with an immediacy that resonates with real-life texture and depth.