Boscombe were / are famous for 'zapping' visiting aircraft with virtually indestructible orange dayglo stickers.
When a visiting Sea Harrier ( forget the squadron, the lot with the white gauntlet on the fin - 809 ? ) stayed overnight, it came back to Dunsfold resplendent with a dayglo version, middle finger extended !
As far as I know it stayed there for the life of the aircraft.
The earlier account of a Lightning being tampered with sounds about right - my ex- boss's squadron hosted a 'Tiger' Lightning just before a display, by the morning the aggressive looking Tiger on the fin had been replaced by the dippy looking 'Tony, They'rre Great' as in the Sugar Frosties Ad'...
BTW, a pink Harrier T4 ( P.R ? ) is a new one on me, or was that the victim of another overnight job ?!