Hi Viz yellow bowers were painted green as were red fire engines and white ambulances. Then, as you couldn't see them, fluorescent yellow strips were attached. No one figured out that everything is GREEN on a bomber radar and jammers would have been more effective.
I was an RAF telegraphist who volunteered for 38 Group TCW in 1967. I was immediately sent on a 2 year detachment to 604 Forward Air Control Section who had an RAF Land Rover (I still remember the registration 95AA45 - how sad!). This vehicle began life painted gloss RAF blue but upon arrival at 38 Group it was painted matt blue (more tactical). When it was about to be despatched to 604 FACS it was painted gloss army green. Upon arrival at 24 Brigade (Plymouth) it was repainted matt army green. About six months later it was repainted matt army green with camouflage "splodges". I shudder to think how much the repaints cost in terms of manhours in sanding down, masking off headlights, etc