Cotman Watercolor, Viridian Hue, 8 ml Tube Accessible but uncompromising on quality with good tinting strength! Cotman Watercolors, from the makers of Winsor & Newton Professional Watercolors, offers a comparatively inexpensive selection of good-quality watercolors. The Cotman line includes both traditional pigments and reliable synthetic colors that replace some of the more rare and expensive pigments used in the Professional Watercolors. Winsor & Newton Cotman Watercolors represent superb value and are compatible with acrylics and gouache to produce combinations of opacity and transparency. They have excellent tinting strength. Fine Art Pigments Cotman Watercolours uses fine art pigments with reduced pigment load than the Professional Watercolour range, making them an accessible choice while still uncompromising on quality. Transparent Colour Formulated to create uniform consistency, the transparent quality of Cotman Watercolour is perfect for new users. Lightfast and Permanent Rated AA and A for Excellent and Good lightfastness, Cotman Watercolour gives artist the reassurance expected from a quality watercolour range.