Milo,
I don't think the Belfast was ever seen in camoflage colours. I'm making that assumption based on the fact that the only Air Force that ever operated them was the RAF and those wold have been in Transport Command white with blue stripe.
By the time the Falklands came along, HeavyLift owned them (most of them - there were only 10 to start with) and it was theirs that we leased back in their colours.