" Anyway, " he said, breathing a little more heavily than usud, " since then the other centaurs've bin livid with me, an'the trouble is they've got a lot of influence in the Forest...cleverest creatures in here."
She looked around wildly, at the livid sky behind them, at the dark trees on either hand hemming them in like a prison wall, at the frightened figures in the back of the wagon — and finally at him.
Filch stopped a few steps below Harry and turned. At the foot of the stairs stood the only person who could make Harry's situation worse: Snape. He was wearing a long gray nightshirt and he looked livid.
He had heroes who fought against themselves, like Dr Bruce Banner, who became that livid green monster, the Incredible Hulk! And tried to cure himself, but the Hulk didn't agree!
And even now, weeks later, Harry kept waking in the night, drenched in cold sweat, wondering where Voldemort was now, remembering his livid face, his wide, mad eyes.