User blog comment:D. Cello/Assassinews 01/17 -- ACW New Admin, key Ubisoft figure leaves AC/@comment-98.216.38.226-20120125040932/@comment-1153722-20120125083648

Desmond's hoodie changed to black because he was in the Black Room. His subconscious made it look like that. It's still white in reality, as you can see here.