I have the Persimmon cover. It's certainly orange.
Functionally, I like the cover a lot. It's light weight, the clasp works well, the auto-on/off feature is a nice touch. But the feel and look? Yech! Feels like cardboard, not leather, and has none of the tactile feel of a leather bound book. I have had Amazon leather covers for my K2 and K3, and liked them, but this one really feels cheap.
OTOH, I also have a lovely Oberon cover for my Paperwhite. But as beautiful as it is, I won't be using it. It's just too big and bulky for the Paperwhite, and when it's folded over it's too think for easy one-handed page turns in both directions. Sigh. A cover that combined the look and feel of the Oberon, with the functionality and slimness of the Amazon cover would be my choice. Sadly, it's not an option.