I recall a hangar at one of the stations I was based at still had the remnants of it's war time camouflage. I recall it looked to be a very dark green. I can't remember which station, Might have been Marham.
As for Berets - I have a similar photo to the one above of my father's entry at Bridgenorth taken in 1949. There was a mix of forage caps and berets.