Denim Richards Yellowstone Colby Cotton JacketColby TV Series Yellowstone Denim Richards Cotton Jacket Don't miss a chance to get the newly launched Denim Richards Yellowstone Colby Cotton Jacket, at the affordable pricing range. By the title name, it becomes clear that this jacket belongs to the Colby character of the Yellowstone series, played by Denim Richards. The tan brown color of the Yellowstone Colby Jacket is the courtesy of cotton fabric used for the manufacturing of external covering.