Board Thread:Theories and Speculation/@comment-27924662-20160817160245/@comment-1872728-20160824053602

@GreatestSin @UltimaDude Six Paths Sage Chakra is a special kind of Sage Chakra inherited from Kaguya, where she obtained it from the God Tree, so it doesn't contain Six Paths Chakra. This explains why Hagoromo can learn Sage Mode by himself without the help of toads, because this ability is inherited. This also applies with Hashirama and in extension Asura, although they inherited it from Hagoromo instead.

The difference between Six Paths Chakra or Paths Chakra (Dojutsu Chakra) in general, and Six Paths Sage Chakra or Sage Chakra in general, is that the former makes the jutsu blacker in colour (Amaterasu, Six Paths: Chidori etc), while the latter makes the jutsu whiter in colour (Sage Art: Rasengan etc). The reason why the Flapping Chidori is black, is probably due to Sasuke's Sharingan being enhanced by the Curse Mark.

Hagoromo passed on the Six Paths Chakra to Sasuke, and Six Paths Sage Chakra to Naruto, which gave them the ability to manifest the Rinnegan and Six Paths Sage Mode respectively. Hagoromo also passed on the seals required for the Six Paths: Chibaku Tensei to Sasuke and Naruto on their left and right palms respectively. Hagoromo didn't give Sasuke the Rinnegan or Naruto the Six Paths Sage Mode, or else he would've lost it himself because you can't give someone something without losing it yourself.