AOOKMIYA Paul Rubens 24 Colors Professional Solid Watercolor Paint Water Color Painting Pigment+64K Watercolor SketchbookSET 1 SET 2 SET 3 Professional Grade Watercolor, 12 24 48 Colors Paul Rubens Artist Watercolour Solid Cakes Made with Gum Arabic,OX Gall High Lightfastness and Transparency 1. Paul Rubens Watercolour adopt ultra pure pigment which has been delicately ground that makes not easy get grey or produce scrap, you can see there is just micro differences when it's wet or dry. 2. It's good transparency and tinting strength plus excellent lightfastness makes