Indigo is a deep blue pigment that can range from dark black to pale blue. Originally extracted from plants similar to blue woad used by the ancient Britons, it was synthesised in 1878 in Germany. It is one of the oldest blue pigments used universally.
Pewter is a unique silver grey oil colour which is semi-opaque. Due to its unusual combination of pigments, it creates a metal sheen closely resembling that of pewter.
A synthetic lake pigment from the Madder plant, Alizarin Crimson was the first natural dye to be synthesised in 1868. It is a deep transparent red with a blueish undertone.
