Washoutt, I'm unsure about the colouring of the photo's or the method used.
However, the text accompanying the Spitfire was:
Two German members of the Organisation Todt (involved in the construction of the Atlantic Wall) are sitting on the Spitfire brought down on the wet sands at Calais by Flying Officer Peter Cazenove. It had been hit by a single bullet from a German Dornier bomber. The plane was consumed by the sandy beach and remained there for 40 years. (Colorized by Paul Reynolds. Historic Military Photo Colourisations)