BEagle, to each his own I guess, but I always thought the first permutation of the Red/White/Light Grey (red leading edges & wingroots, grey elevators) was
much more suited to the Chipmunk than the more common second one!
You're correct, UAS Chipmunks in this scheme were very rare birds indeed. Not surprising really, the scheme wasn't introduced until 1970 with the Bulldog replacing UAS Chipmunks two years' later. One of the few was WK507, ex Birmingham UAS, which arrived in Australia in 1974:
