User blog comment:Godisme/Everything But The Rain Op. 3 Dark of the Moon/@comment-5675229-20130313221506/@comment-5745799-20130322135044

Um, even before losing his powers, Ichigo's Getsuga Tensho was blue when he used it in Shikai. It turns black when he uses it in Bankai (unless I'm mistaken, and it actually is his Hollow powers that turns it black). It doesn't imply that he lost his Hollow powers. However, I'm pretty sure Hollow Ichigo is gone due to Ichigo losing all of his powers to the FGT. As for his Fullbring, it couldn't have come from Hollow Ichigo because there were other Fullbringers who were never Visoreds (or even Shinigami) who had it. Ichigo's Hollow powers came from Hichigo, but he could also have had his own Hollow powers that was his Fullbring. Also, I'm not sure his Fullbring was completely taken from him because he still had the black things on his neck from his Fullbring. It could be that Kugo just took too much of it from Ichigo that it became too weak to make any difference in battle.