Stunning indeed. It's been sunny and an almost cloudless sky for a few days now at 4.30am, though not necessarily the brilliant red captured perfectly on Mr Cameron's video. Then the cumulus cotton wool clouds wake up and fill the sky not that much later.
On a whim, I bought one of those 8cm crystal balls to take upside down shots in a circle inside the bigger picture view. Would be perfect for a sky like that portrayed.