Watercolour more than any other medium relies upon the variable characteristics of the pigments used. Our Professional Water Colours use only the purest pigments, and are known for their brilliance, permanence and strength of colour. Unrivalled Transparency The transparency of Professional Water Colour is due to the way the pigment is dispersed during manufacture. In thin washes, the colour is present but the reflective white of the paper can still be seen. The colours provide brilliance and clean mixing and the natural characteristics of pigments mean that some will be more transparent than others.