What is “maya blue”? why is it important to mayan art?

Maya blue pigment is a composite of organic and inorganic constituents, primarily indigo dyes derived from the leaves of añil (Indigofera suffruticosa) plants combined with palygorskite, a natural clay which, mysteriously, is not known to exist in abundant deposits in Mesoamerica. And why is it important? because for ritual purposes, art objects, and murals, they used Maya blue, a pigment without equal with regard to boldness, beauty, and durability. Maya blue is made of indigo embedded in a special clay mineral called palygorskite.

i'm not too sure - if you could attach the picture