I’m afraid I’ll have to agree with the general conclusion of sun-faded, based on the discoloration of the label, energy symbols, and card itself besides just the border. But to back it up with some arguments:
First of all regarding the Meowth and Staryu you’ve posted, stating the border discolored but the cards themselves not. Those were only exposed to sun for a week according to the FB post, which isn’t a long time. The border is indeed the first to fade on old WotC era cards, but eventually the card itself starts to fade as well after a longer period of time.
Here some sun-discolored Pikachu cards I own in varying states of fading (the first one is still incoming, so not my picture):
The last one was exposed to the sun on purpose in a sunny country for almost an entire year.
As you can see in the first picture: it starts with just the border and the card itself is only very slightly lighter than a non-albino card (and color variation of the card itself is normal anyway, as you can see from all these Base Set Pikachu cards for example). But after a while the entire card starts to fade as well.
Also, @silversnorlax204 made this excellent article about UV exposed cards, both raw and PSA-graded: www.elitefourum.com/t/uv-light-testing-8-month-conclusion-group-one/21895/1
Here his conclusion video:
Also, one other thing with misprints like this: there is no concrete way to distinguish an actual printed albino misprint with a sun-faded albino misprint. Similar as there is no concrete way to distinguish a pack-pulled and NFC (not factory cut) square cut card. And no concrete way to distinguish between a pack-pulled imprinted no name Yu-Gi-Oh card and someone carefully removing the name to fake it.
I have no doubt in my mind there are real albino misprints, square cuts, and imprinted Yu-Gi-Oh cards pulled from packs or boxes (I’ve even seen some videos of people pulling cards from those last two categories), but after it’s out of the pack, it’s similar as those ‘fake’ alternatives. So they might be real, but they also might not be, and because of that a lot of people aren’t interested in them (as you have also noticed from the responses above thus far).
Anyway, based on the pictures I’d say it’s indeed sun-faded, considering the card itself and PSA-label are lighter in color as well. But whether it really is a legit albino or sun-discolored albino, without video evidence of it being pulled from the pack, there isn’t really a way to prove or disprove it I’m afraid.
Greetz,
Quuador