Board Thread:Wiki Discussions/@comment-1512913-20140523114930/@comment-1512913-20140523163011

The only official colorings known to be by Kishimoto are volume covers, chapter covers (only rarely he colors them tho) and first pages too, when we get them as a "special gift" of sorts once in a while.

It doesn't make any sense whatsoever for Madara to have gotten red hair. Such a thing would suggest that Hagoromo himself had red hair from jinchuuriki stuff. Even less likely it is considering Obito's turned white as of Kishimoto coloring.