Colorex is a transparent watercolour ink and is used by artists who appreciate its light, velvet finish and its perfectly uniform flat colour. Highly concentrated, Colorex watercolour ink withstands heavy dilution with water. It can be used pure or diluted according to the intensity required. You can apply it with a brush or use it with an airbrush. We offer you a special set which includes 5 bottles of 45ml: primary yellow, magenta, cyan, white and black. Price per set.