Rick,
I have deliberately avoided sandblasting the hull until I can learn and document as much as possible about the markings and colours.
Despite the heavy rust in spots, there are significant amounts of stencils and successive levels of paint. The drivers door has "----ERS ----SHIELD", which I have interpreted to read "DRIVERS WINDSHIELD". I think the footman loops held it in place with webbing straps. Above the drivers escape hatch are stencils for POUCHES and EARPHONES.
On the observers/gunners side there are stencils for POUCHES, EARPHONES, SPARE BARREL, MAP CASE and HAVERSACK.
My latches were partially dismantled on the picture that you refer to. I think our latches are quite similar.
I agree with your deduction of the interior colour for the escape hatches. When it comes to paint, it will be the same as the exterior, for the same logic that you used.
Looking forward to hearing of your progress and eagerly await more of your updates, Peter
