I think not, not all players like the 4 color decks, I think that is an option for those who want to visualize the cards that way but should not be imposed by the casino or any poker room
I don't know if that's really necessary in live poker because you can see and hold the cards in real life so much closer less likely to make mistakes even though they still do happen. But online I like to use the four color deck because I find it definitely helps and not mistaking cards for different suits LOL
I'm with Debi on this one. The older I get the more I appreciate the "old fart" cards....ya know...the ones with REALLY BIG numbers? 4 color deck would be nice.