Winsor & Newton Artists Watercolours are of the finest artist quality. Each colour within the range has an individual formulation, taking advantage of each pigment's characteristics and ensuring colour stability. The high performance pigments ensure excellent strength and brilliance of colour whilst single pigment formulations have been used wherever possible to ensure cleaner, brighter mixes. Permanent alternatives have been developed for the less durable traditional colours, without compromising handling properties, to generally improve the permanence of the range.