User blog comment:Xilinoc/Ch. 591 - Marching Out the ZOMBIES 2/@comment-11446176-20140730113117/@comment-5398287-20140730113222

Well, the Shinigami who were alive when zombified have normal skin. Hitsugaya, on the other hand, has the same darkened skin as Bambietta, whom Giselle killed before zombifying.