In botanical and natural history literature, “bark brown” is employed as a precise, earthy descriptor that captures the natural hues of tree trunks and other woody elements. For example, some texts describe trunks as “bark brown or reddish” with deeply fissured textures, emphasizing both the rough quality and the natural color of the bark [1]. Other descriptions pair this hue with gray to highlight the aging process, as in “bark brown and gray, with smooth flat-topped ridges separated by shallow fissures” [2]. Additionally, detailed botanical accounts extend the palette with descriptors such as “bark brown, scaly” [3] or even blend in hints of red to denote subtle variations, as seen in “bark brownish-red” [4]. Together, these examples highlight how authors use “bark brown” to evoke a sense of natural ruggedness and the timeless quality of the natural world.