Board Thread:Theories and Speculation/@comment-26547223-20161216172216/@comment-25122992-20161216172741

I think the latter is just an inconsistency in depicting Biju chakra. I mean, it's usually shown as red, but there are a lot of instances where it was coloured blue as if it was an ordinary chakra. The most prominent example would be Sasuke absorbing the chakra of Chibaku Tensei'ed Beasts and merging it within his Susanoo, when the absorbed chakra is clearly blue, despite the fact it's a Biju chakra.