I bought this one in black:
http://www.geckocovers.com/kobo-aura...er-deluxe.html
It doesn't look too bad, but I get the impression it doesn't fit a 100%. If you look at the picture, you get the impression the Kobo is skewed inside the cover. Also, the upper left corner if very slightly covered because of this. I did push the Kobo all the way in to the right as far as possible.
I might hang on to it, not sure yet.