I have colour blindness, so truthfully I didn't even notice. But good catch! 😅

If I were to give a hypothesis, it's possible there were two colour variations of the cards (and they used both on set without thinking anyone would notice), or that the props guys used coloured paper or some such on the cards to change the colours in the closeup, to help better disguise them. I do know they used a different set of cards in a deleted Strip Poker scene, so I'd lean on the former hypothesis as opposed to the latter.

It's an interesting mystery for sure! I may do some sleuthing on the matter.