Winsor & Newton - Cotman Watercolour 8ml Tubes To view and/or purchase different colours please use the scroll down menu above. The colour is sold separately. The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Watercolour range also relates to the Winsor & Newton Artists' Watercolour range, this enables artists to use colours from both ranges with minimal adjustment to their technique. This is available in 8 ml tubes. Great transparency. Good tinting strength. Excellent working properties. Offers a wide colour spectrum within a uniform price. Suitable for both amateur and professional artists. Take a look at our entire range of the Winsor & Newton Collection!