Whilst I realise that the photos will never represent a perfect image, what is the solution? Go out and take samples of crop plants and grass, then go home and aim to translate that colour across in photoshop?
I think that the best solution is to give the people a representation, as near as possible, of how they imagine England to look like (either from past flying experiences, or from what they've seen whilst atop a relatively high hill).
Obviously, none of the pictures posted match perfectly, but an equilibrium can be attained which may not be far off reality. Indeed, one can tune their monitor to reach a different balance as well. No matter if Ali got the colours down to a tee, people would still see different results because their monitor isn't correctly calibrated.
I agree that photos will all vary, maybe to considerable degrees, but I can't see perfection being reached on purpose.
