Solid Solutions Acrylic Colour is a high-quality acrylic paint which is renowned for its exceptionally smooth consistency. It is a thick buttery consistency that is quick-drying, water-repellent, flexible and non-toxic. Clean up with soapy water. Colours may stain, always wear protective clothing. Conforms to ASTM D-4236. Colour Burnt Umber Pigment Number PBr7 Pigment Lightfastness Rating ASTM1 Paint Opacity Semi-Transparent Burnt Umber, a luxurious dark brown pigment, is crafted from natural brown clays discovered in the earth. Its name is a nod to Umbria, a region in Italy where it was historically mined. The process of burning the raw pigment enhances its colour intensity.