Board Thread:Naruto Discussions/@comment-28939725-20161116235549/@comment-3568954-20161117144146

the color of a susanoo is related to the users Chakra signature. each shinobi's chakra has a different color to the naked eye it is blue but to people who can sense and distinguish the difference they can see the individual color of the chakra. susanoo is a manifestation of the users chakra in the form of a guardian deity because of this they have different colors