I don't mind different shades (darker/lighter), but for crying out loud why make the 4 pink and the 5 purple? To make the game better? No.
It's fashion. It's to be different. And it's silly.
We've seen this before. When Cyclop balls were introduced in 2013, reps from Diamond and Cyclop (who worked together on the balls) did an interview. What great reason was given for the pastel colors and making the 7 ball powder blue?
"We wanted to have different colors so the people would be able to distinguish from other ball manufacturers."
https://youtu.be/2bxBqVyQnSw?t=50
Then during Wednesday's Team USA vs Team CSI match, Emily, whom in general I'm a fan of, asks Karl Boyes what he thinks of the new balls. In classic hostage video style here's the exchange:
Emily: "So Karl, how did you find the Aramith Black set?"
Karl: "Well in the one rack I've played, I found them alllll-right. They look very clear on the screen. So I don't see any maaaa-jor problems. I don't know; they seem a little bit more modern to me."
Emily: "That's the exact kind of vibe we were going for. Why not? This game is evolving, younger players are coming through, lets modernize things up a little bit. So that was the thought process, behind obviously Matchroom and Aramith"
Karl: "Yeah, I'm sure now and again people watching might think it's a bit difficult to see where the 9 is, like in this instance, but you can clearly see the yellow stripe... so it's not gonna be a maaaa-jor issue."
https://youtu.be/gd3axsi4m4s?t=3723
Elsewhere during the match she basically said if the players want to be involved with Matchroom they better get on board with the new balls.
I'm all for new innovations, but there's no reason to change the fundamental colors.