Vermiculated Dun coloration features a medium to dark dun base with irregular, chunky splotches ranging from dark gold to silvery white, creating distinct color breaks that add depth and contrast. Speckling is also common, further enhancing its unique appearance. The term vermiculated refers to its resemblance to the mineral vermiculite, which displays a mix of gold, brown, silver, and bronze tones in layered, wavy patterns. These striking color variations make Vermiculated Dun an excellent choice for fly tyers, as the natural color breaks add realism and visual appeal to fly patterns.