Flags and heraldry

Going back to the Mardi Gras theme, the sense of a cathartic state of mind, an ephemeral "State" of freedom, and turning upside down of social and power hierarchies for the period of carnival, there are kings and queens of the carnival, but also there is a Mardi Gras flag with traditional heraldic colour representations as follows, purple for justice, green for faith and gold for power (chosen by the visiting Grand Duke Alexei Alexandrovich of Russia in 1872) ...