Derwent Watercolour Pencils Assorted (Pack of 24) 32883. Ideal for mixed media work. Can be used wet or dry allowing you to draw and paint with complete control. Combine the control of a pencil with the subtle beauty of the watercolour medium.. Derwent Watercolour Pencils are great to use and you can mix them with water to create interesting colour flows. The pencils can be used dry and because they have such a soft texture you will find them easy to blend and layer. Watercolour is not permanent like Inktense, so once the colour is dry you can re-wet it and move it about again. Contains Lemon Cadmium, Deep Cadmium, Orange Chrome, Deep Vermilion, Rose Pink, Crimson Lake, Imperial Purple, Light Violet, Spectrum Blue, Prussian Blue, Kingfisher Blue, Mineral Green, Emerald Green, Grass Green, May Green, Olive Green, Brown Ochre, Golden Brown, Copper Beech, Terracotta, Ivory Black, Blue Grey, Gunmetal and Chinese White.