The Cotman Watercolour range offers a more uniform consistency compared to the Artists' Watercolour range, making it easier for beginners to use without needing to understand the nuances of each individual pigment. Recently reformulated, Gamboge Hue is a warm yellow pigment resembling genuine Gamboge. Made from tree resin, genuine Gamboge was brought to Europe in 1603 and was believed to carry medicinal cures, but was found to have toxic properties. Additionally, the Cotman Watercolour range corresponds with the Winsor &; Newton Artists' Watercolour range. For example, Burnt Sienna has the same hue in both ranges, allowing artists to seamlessly mix colours from both with minimal technique adjustments. Series 1.