Fossil Ferns has a tone on tone black. Not sure how good a price you will get on it though. Last time I purchased Fossil Fern fabric it was in the $8 and I just did a quick search and looks like it is in the $9 p/y price range.
That said, I just looked on thousands of bolts and they have a lot of black on black stuff and yardage as well.
http://www.thousandsofbolts.com/inde...search_string=