The colors are a matter of taste. After more than half a year (wash still at 40 ° C with Perwoll Color) see colors like new.
The fabric is soft and stretchy - therefore wears really super.
The flange seat higher than other sneaker socks and so should slip under any circumstances, I can only confirm.
The socks wear all in all really nice and look good. The shelf life is as you'd expect from Puma. Currently have 3 sets in use and would immediately buy back those socks!