The light blue areas - Two coats of filling sprayed on, polished to obtain a perfect smooth surface, so the rivets were not visible, airbrushed with a silver paint.
The green areas - One coat of filling sprayed on, polished to obtain a perfect smooth surface, so the rivets were not visible, airbrushed with a silver paint.
The yellow areas - The silver paint only.
The white areas - unpainted ones ( NMF)
Note.. from D-5 to D-15 the canvas cover of elevators silver painted while from D-20 to D-30 metal covered ones stayed unpainted.