Mission Gold Watercolour are extra-fine Professional artist grade watercolours was designed with the help of expert watercolour artists to mirror the strong, vivid colours of nature. Colour - Bright Opera (551); Limited Lightfast; Transparent; Staining - Moderate; Series - B; Tube of 7 ml. Handcrafted, extra-fine, richly pigmented. Outstanding dissolving power which will shorten working hours. Use the highest quality pigments, considering colour fastness, colour fixation, and transparency. No gummy thickeners