He changed. Not by a little, the change was dramatic. We’d watched him, sloth like, as he moved slowly from place to place seemingly unaware of the world around him. His dull grey pallor blending into his colourless surroundings. You'd hardly have noticed him.
He disappeared for a while, we know not to where. But when he returned he'd changed beyond all recognition. He'd shed his coat of grey, and instead of skulking in the shadows, he basked in the warmth of the sun. You couldn't help but notice him as he outshone everything around him.