Derwent Watercolor Collection, 12-Ct. Metal Tin A Versatile Mix of Watercolor Media Tired of oils and pastels? Watercolor media offers an exciting way to create. And, the Derwent Watercolor Collection includes the inspirational materials that can help any level of artist obtain a working knowledge of how watercolors work. Aquatone Pencils provide pure, concentrated color that can be applied to paper using wet or dry techniques. The versatile HB Sketching Pencil can be applied to dry paper with a water wash for a watercolor effect, used on dampened paper for more detail, or applied dry.