Anyone ever notice how Itachi's sansuno'o is red fire = good guy will of fire, konoha where as Madara's and Sasuke's sasuno'o is purple fire = bad guy darkness fire? Obviously I know Itachi's first stage sasuno'o is purple as well but the second stage one he used in this past week's episode was red where Madara's and Sasuke's is always purple. Just an observation.