Kuretake Traditional Japanese solid watercolours for professional artists and crafters. They are ideal for sketching, illustration, sumi-e and more! By using original colours instead of mixing with other colours, the colours obtain a higher brilliance. Bright Colours are obtained by keeping the number of ingredients to a minimum. These colours have been manufactured using the same technique as sumi sticks which allows for great blending. Various Expressions by Shading - Water-based pigment paint can be highly opaque when used solely as a gouache but can also become more transparent depending on the amount of water added for dilution. The materials used to produce these watercolour are non-toxic. No toxic heavy metals were used in production and safety was made a priority.