Gray
Disclaimer: I don't own this.
His color might be red. But I doubt that he is that color. He looked into my eyes, and told me that he changed. And I believed him, because his eyes said it all. When he talked about his mother his eyes were shimmering with a look of happiness, however, he told me that the Fire nation took his mother too. And his chance to redeem his self was now. But he did not. I thought he changed, and his eyes did not lie at all. But between black and white, there's gray, and he's gray. For a second, I caught a glance at his face and I noticed, that he looked confused. Maybe, there's hope for him yet.