Just spotted these, nice !
The Chieftain is in the colours used for the Berlin Squadron, and it worked very well in the city landscape. I was involved in a venture where we had six Chieftains, three of them ex- Berlin (there were six in total), and they were virtually brand new, only being brought ot to 'show the flag' now and then.
The colours should be off white, light grey, mid grey and brown.
The other surviving Berliners went to the place I used to lecture at, one at least since being sold on, another re-painted, and the final one sitting in a field getting covered in moss and weeds ......