Board Thread:Theories and Speculation/@comment-1872728-20151019025302/@comment-1872728-20151021143847

JouXIII wrote: This. But I still think that they made the chakra colours of the bad guys to be darker, maybe so it can contrast with the good guys? Maybe not necessarily the personalities change the colour, but the personalities of the character that made Kishi to choose that colour? JouXIII wrote: So now both Hamura and Hagoromo are evil... Okay. (-_-) But Hagoromo's is yellow though. JouXIII wrote: Yeah, they would... And it would be something entirely random and pointless, because that's what Studio Pierrot thinks we want to see. Haha, but my point is that will they show any more Susanoo in any media at all (e.g. games, novels etc.), not just in fillers. Because they did introduce Shisui's Susanoo initially in a game. AsianReaper wrote: When Kakashi manifested Susanoo, it was to protect Sakura and help his team defeat Kaguya. Why isn't his a warmer color? What if the Susanoo's colour is permanently set when you activated the Susanoo for the first time, and Obito already activated it when he's still bad? This also shows that how this Susanoo is manifested (the reason why this person has the Susanoo), if they manifested it for a good reason (protect), or a bad reason (destroy). Maybe Obito activated it shortly after he awakened his Mangekyou, and the reason he activated it is to destroy the real world. Which also explains why Itachi's is a warm colour, because he manifested it to protect his clan, and why Sasuke's is a cold colour, because he manifested it to destroy his bonds.

Summary: Even if the personality doesn't change the chakra colour directly, I still think it's related to the chakra colour in some way. Maybe the way Kishi give the characters chakra colour is based on their personality?