After Naruto successfully separated the chakra from the Nine-Tails, and imprisoned the Nine-Tails itself with a new seal, he can access its chakra directly whenever he needs it without interacting with the Nine-Tails at all. In doing so, the chakra envelops Naruto, and the shroud takes on the appearance resembling the Sage of the Six Paths, with his new seal clearly visible on the shroud, and the color of his irides also changes from blue to orange. Unlike the demon fox shroud, which is red and releases chakra as seething bubbles, this form's shroud is yellow and releases chakra as flickers of flame