Sirius blinks, strangely surprised by the question. "Oh, I hadn't thought to," he admits, his smile faltering just a bit into a frown. "I could, yeah. It wouldn't be permanent; the spell wears off after a time. Do you want me to?"

It's not the first time Kieren's mentioned the true color of his eyes and, for a moment, Sirius regrets not having thought of it first. Suggesting it. But the truth is, as odd as Kieren's eyes had seemed at the start, he's well used to them now. If anything, he has a hard time imagining them any other way than exactly as they are.