followers the Alice A. Bailey material, in earlier editions up to and including the 1970s were originally bound in matte medium Persian blue, but since the 1980s, they have been bound in glossy Persian blue. Persian carpets When blue Persian carpets are produced in Iran, medium Persian blue is one of the most commonly used tones of blue. References External links (1870): A painting by Jean-Léon Gérôme which shows a snake charmer in a Persian market with Persian blue tiles in the background Shades of blue