Nice work Wojtek!
The only thing you need to watch out for is US aircraft in FAA service. Some of these were delivered in 'equivalent colours', where, for instance DuPont paints were used, and a nearest equivalent was substituted, example Sky Grey for Sky etc. Also, this could differ depending on the factory producing them with, for example, Avengers displaying two different paint schemes, depending whether Grumman or General Motors produced. However, the difference was minimal and, in model form, hardly noticeable. Add to this fading and weathering after long periods at sea, and the 'standard' colours can be used acceptably.