Debating picking up a new set tomorrow. Only have the greys and a Pro. Never regretted the greys as I play mostly portable but wanting a colour set for the sake of variation.
The Splatoon set is so juicy. I first got it because of the pink, but the pure neon intensity is a bit too much, while the green is just absolutely lovely. They do work lovely together, but I would love a softer pink joy con one day.
I've got the grey, neon blue and red, and Splatoon 2 Joy-Con sets. I like the Splatoon 2 set the best:
As a '90s kid, I also have a huge soft-spot for mixing neon yellow and neon pink Joy-Con, but can't justify spending another $80 to do that at the moment.
If we're opening it up to customs, translucent d-pad Joy-Con are the holy grail for me: