Those are good color references. I've also used the corrected RLM color chips scanned from Michael Ulmmans book 'Luftwaffe colors'. One thing to consider though, is that most colors / chips need to be lightened for scale. At least I use most of the principles used in airbrushing models when doing skins.
Another factor is the age of the lacquer on the plane as well as the the tint of the lacquer produced. I know German planes had many variations of single colors. This was due to dwindling supplies, time efforts to speed up production, ect....some cases specified 2-3 coats of rlm66 on the interior surfaces of the planes - by the end of the war - they were down to one light coat over primer. Even some of the late model GE planes came out with primer and another color as a camo applied from factory.
Also ground crews that would paint the planes if needed - would sometimes use captured paint stores, ect... or any other available source.
I don't really see the need for a "standardized" AH color scheme.
Currently, it looks as most of the folks who are doing the skins and putting serious effort into it are doing a good job at selecting colors and making them fit the game.
Half of the fun for me, when I do a skin - is doing the research behind it. Finding pictures, drawings, ect and building from the ground up.
