Dun Grizzly is one of the colors Doc Fried passed onto Tom Whiting. Dun Grizzly isn’t a single shade. The base color can be off-white to a dark medium grey dun, and its barring can range from light tan to dark dun. The typical color is a light grey dun base with medium to dark grey dun barring. This makes it a great material for adding “bugginess” to flies that typically call for “dun.”