Product Description Mars Orange is a dark valued, earthy orange and is useful in a variety of watercolour applications. A wonderful addition to any palette, Mars Orange mixes well with other colours to create an array of useful and interesting colours. Artist Notes : Mix Mars Orange with Ultramarine Blue to create a range of beautiful, earthy greys. Combine with Manganese Violet to make earthy browns. Paint Makers Notes : Developed at the end of the 18 th century in response to depleted natural pigment deposits, synthetic iron oxides were given the title Mars. This was in honour of the Roman god of war and our own planetary neighbour which contains double the iron oxide in its outer layer than our own planet does. Transparency: Opaque Staining: Semi-Staining Granularity : Semi-Granular Pigment Number: PY 42 Pigment Type : Synthetic Inorganic Pigment Composition: Iron oxide Lightfastness: I – Excellent Toxicity: Non Toxic