I had custom Katzkin grey leather put into my 2012, and I am VERY happy with it. I would highly recommend Katzkin to anyone looking to add leather or upgrade their interior. The quality is top notch.
It's a complete replacement kit, they do everything, front, back, console, the works, and you have a ton of choice as to how you design the seats - color, layout/pattern, perforations, stitching, etc... I also had seat heaters put in on both front seats and the outside rear seats. All in was around $2200, and IIRC, about $4-500 of that was the seat heaters.
I'll try to take some decent pics one of these days, hopefully this weekend.