Winsor & Newton Artisan Water Mixable Oil Colours - Burnt Sienna - 37 ML is magnificently designed to look and work just like traditional oil paint. The key difference between Artisan and conventional oils is its ability to thin and clean up with water. Artisan has been specifically developed to appear and work just like conventional oil colour. The depth of colour, buttery consistency, light fastness, opacity/transparency, performance and drying times of Artisan, allow artists to use this range for all oil colour techniques. Burnt Sienna is a rich brown pigment made by burning Raw Sienna. Named after Siena in Italy, where the pigment was sourced during the Renaissance, it is a transparent pigment with red-brown tones.