One reason that I'm looking for case alternatives at home is to bide time while waiting for more correct colors from Kobo. Black doesn't go with dark brown and that's our only choice currently.
The gentleman who confected cases with custom designs on the covers for the PRS-350 and 950 might be someone to ask. His vintage-styled brown, cognac and burgundy cases were particularly nice.
Edit: Here's the gentleman I meant:
HMCurriers
Problem is, one of us would have to send him our Aura to model the case. Who's willing to part with theirs for that long?
Edit: The prices now seem a bit higher than I'd pay at this point.