Flag of House Atreides on arrival at Dune
The movie Dune (1984) based on the novel by Frank Herbert. Dune was of the few movies to actually show flags of alien civilizations. The primary flag shown is that of the protagonists family and assumed home world on Caladan. Calandan is quite the opposite of Dune and has plenty of water unlike Dune.
The Colours of House Atreides
are dark green and black
Right now Hollywood is hot with remakes of Sci-Fri from the 80s! Tron, Superman, Transformers, etc. Soon we may soon get a remake of Dune. It totally needs one.
Frank Herbert was keenly aware the link between religion, psychoactive substances, science, and the seductive power of politics.