While I can't really recommend these guys other cards, I got an email notice for the pre-sale of their 4 Color decks & I know lots of people out there are always looking for 4 Color decks so.......
not really a ringing endorsement from me but here ya go.
https://fadedspade.com/cards/four-color-playing-card-set
not really a ringing endorsement from me but here ya go.
https://fadedspade.com/cards/four-color-playing-card-set