Speaking from my ex-military pilot's point of view, it's the actual sight and sound of the aircraft in the sky that counts, not authentic colour detail.
If it's possible to do both, all well and good. But if the original paint scheme has to be changed as a compromise to keep the aircraft in the air, either to please the public, a sponsor, or for advertising reasons, I see that as far better than the aircraft spending many sad decades as an aluminium edifice sitting in a dusty museum - or even worse, rotting outside. You can go to Hendon or elsewhere to see many authentic paint jobs getting dusty.
Adrian Swire's Hunter was bright shiny red - it looked fantastic, even though it bore no resemblance to it's earlier history. Especially the day it flew past me inverted.