In literary descriptions, “walnut” often transcends its literal meaning to evoke a rich, deep brown hue reminiscent of polished wood. Rather than merely naming a tree or nut, writers use walnut as a color to suggest a natural warmth and refined elegance. For instance, one author praises walnut juice for its ability to produce a long‐lasting, superior brown finish ([1]), thereby invoking an earthy, textured quality. Similarly, furnishings or decorative objects described as “walnut” call to mind the deep, lustrous tones of finely grained walnut wood, imbuing a scene with both color and tactile history ([2], [3]).