Is Yamori's change of hair color caused by torture? Yamori (Yakumo Oomori) has undergone torture before. Did the torture really cause Yamori to change his hair color?
In the wiki,


  In Tokyo Ghoul: Jack, Yamori was slimmer than he was in the Tokyo Ghoul manga and had black hair.


In the Tokyo Ghoul manga, he already has blonde/white hair. Since he was also subjected to torture similar to Kaneki, and since he was also depicted in the manga standing over his torturer with blonde/white hair, it can be said that the same thing that happened to Kaneki's hair also happened to him. Might also be useful: Why did Kaneki&#39;s hair change color?