Turquoise is an opaque blend of green and blue pigments. The name stems from the French 'Turquoise' for the semi-precious stone that was exported to Europe from Persia via Turkey.
Winsor Emerald is a bright clean opaque emerald colour. First documented in 1822, it originally contained arsenic, and is said to have killed Napoleon as his wallpaper in St Helens was emerald green...
Sepia is a black brown colour. Originally made in the 18th from the ink sacks of cuttlefish, it is now made from a mixture of carbon and umber. It is a highly permanent colour.
Mauve is a rich violet colour. Originally a lake pigment, Mauve was discovered in England 1856 by Sir William Perkin and quickly became a fashionable clothing colour during the Victorian age.