White.

When he wakes up, his health is stable and there aren't worrying signs, at least for what concerns his physical health. His hair turned white and his irises of a strange shade of grey.
He doesn't speak and doesn't seem very lucid, mentally, probably due to the fact his organism is still adapting to the changes that occurred to his elements. Or simply the result of the long and great suffering he went through.

They called Christophei to take a look at him, bit there wasn't much she could do or say. It's an undocumented phenomena and it's her first time witnessing a Knight 'resetting' his elements. Regretfully, all she can do is to say to wait and see how it develops.