I'm pretty sure he can speak for himself, and probably will shortly.
As for my use of the word "theorized", like he said, the only pictures we have of the ol' girl back in the day are either inconsistent in color or in black & white, and we have no way of knowing how faded the upper saucer is, if at all, so making any conclusion as to what the model looked like, in person, under normal lighting conditions, in essence, guesswork. It may be incredibly informed guesswork, with tons of corroborating evidence, but without access to a TARDIS and a properly white balanced high definition digital camera to go back and take pics of the freshly painted model, it still comes down to "best guess."
MY theory is that the ship wasn't any more weathered than the upper saucer, and while Gary's points about the multiple passes through the optical printer necessitated some exaggeration in the detailing, it didn't require the godawful paintjob Miarecki foisted on that poor ship.