Winsor & Newton Professional Water Colour Paint, 5ml tube, Green Gold The finest water colour offering the widest choice of pigments & the highest possible permanence Series: 2 / Colour Code: 294 / Colour Index: PY 129 Permanence: A / Opacity: Transparent Includes a 0.17oz / 5ml tube of Winsor & Newton Professional Water Colour Conforms to ASTM D4236