I seem to remember that virtually all the TV progs in colour were US - the most popular being Star Trek and The Rowan and Martin Laugh-In. Just after New Year 1969, some of us were back at the Towers to catch up on Chipmunk flying because of bad weather, and the Junior Mess was closed, so had to use College Hall. Needless to say, the weather stayed poor and one group of flight cadets were watching the large colour TV in College Hall one morning when 2 men in brown coats came in, announced that they were taking away the TV for repair, picked it up and walked out, driving away in a van. No-one thought to query the fact that the TV seemed to be working well at the time. It was only a couple of days later when Mess Manager etc came back to work that anyone asked how long the TV would be away being repaired. Panic all round. RAF plods and the might of Sleaford CID called in. Cadets asked to describe thieves. Best they got was "They were wearing brown coats and looked like TV repair men".
Strangely, the plods did recover the TV from somewhere in North Wales - well-known hotbed of TV thievery, mainly because it was still big and rare and the system had its serial number. And people say life at Cranners was dull!