Question. You can't take the coins out of this type of packaging without destroying said packaging. Is it possible to do the dirty deed through the packaging?
Update, I just got the sets in today and now I'm even more confused. The toning is not nearly as pronounced and bright as the images and looks fairly natural (to me anyway). I'm not really convinced that it is natural, but I may throw one or two of the coins in my next PCGS submission just to see what happens. Maybe I'll get lucky, or maybe I'll just waste a few more bucks on these. We shall see.
Honestly I think it comes down to whether the coins are MA (market acceptable) or not. WingedLiberty has a stunning set of modern proofs and many of his coins exhibit similar toning as yours. It boggles my mind how coins produced less than 10 years ago can tone so rapidly with such vibrant colors...but in any case PCGS accepts them (or at least, some of them). I think for this specific type of colofully toned coinage, it comes down to small subtleties -- ex: how smooth the color progression is, how well the colors mix or clash together, any abnormal hazing spots, etc. -- that will dictate whether or not they will straight grade. For example, it's doubtful that the John Q. Adams proof will straight grade, though a couple others such as the Andrew Jackson proof (I really like that "cornflower blue," as WingedLiberty put it, the best!) have a good chance of making an actual PF6X grade. Of course, as long as you're satisfied with your purchase, I don't think it matters. In any case, those are a great group of coins for a great price!
People always seem to think that it takes long periods of time for toning to occur. It doesn't ! It can literally occur in just a few days. Or it can take decades. Toning begins the very instant that a coin leaves the dies. And it will, depending on conditions, continue from there. You can do things to slow it down but you cannot stop it. So when you see coins that are 10 years old, or 5, or even 1, and they are toned - don't be surprised, it happens. And yes, I mean natural toning. Does it happen all the time ? No, of course not, because it depends on conditions. But it can and does happen.