Thanks for all the kind words!
@Hood
It seems that Peruvian P-36 might have carried also some more paint schemes, originally coming from Norwegian order (and so initially they were painted in greenish color), but were refurbished before delivery (so possibly could be repainted in US olive drab over neutral grey), and indeed I encountered mention about being painted blue, but eventually decided to "play it safe" and stick to just one version in silver/natural metal color.