In literature, "dull brown" is often employed as a subtle, unspectacular hue that conveys a sense of muted realism and sometimes dreariness. Authors use it to describe a range of subjects—from the natural world, as in the barren, lackluster landscapes or the drab plumage of birds ([1], [2]), to human attributes like hair and eyes that suggest a wearied or aged quality ([3], [4], [5]). This color, devoid of vividness, is also applied to everyday objects and settings, such as walls or furniture, where it highlights an atmosphere of decay, neglect, or the simple passage of time ([6], [7]). Overall, the recurring use of "dull brown" in these examples helps establish a backdrop of subdued tone, inviting readers to perceive both the physical environment and its inhabitants in a more somber, realistic light.