"On a return flight from Phuket on one earlier this year I was wanting to get some photos out of the window of the offshore islands etc that we had visited during our trip but almost immediately after take off at around 2000 feet the cabin crew decided to do a "demo" of the various colours/hues etc. I wasnt able to overide it and by the time it was finished we were above the first cloud layer and it was all too late. Maybe not important but annoying all the same ."
The crew didn't decide, it is airline policy and to do this after take off.