Either would be in keeping with the myriad themed Uno variants which often introduce cards which in practice really break the game and probably haven't been play tested. You can just drop that mechanic and leave the jokers out of the deck, or you can assign the jokers to some special purpose. You lose the strategic zero card from Uno-a number card that is rarer to match and has no point value, but your jokers are still unused. To better approximate the original Uno card distribution, I propose that you keep Reverse and Skip (Jack and Queen) and make half of the Kings be Wild and half be Draw 4 Wild. It's still common enough to find two decks of cards of different colors-these are typically used for games like Bridge.ħ6 number cards (two of 1-9 per color, plus one each of 0)
Uno is played with a deck of 108 cards, which coincidentally is the same number of cards used in two standard decks of cards (incl.