Derwent Watercolor Pencil Pencils are easy and convenient to use, paints a little less so. But there's a high quality coloured pencil that you can paint with as well, so you can enjoy the best of both worlds. Derwent Watercolour can be used wet or dry, on wet or dry paper, to achieve a varity of effects, from bold, vibrant images to delicate watercolour washes. It comes in 72 great colours, which retain their full intensity however you use them. For sheer versatility, Watercolour is unmatched.