If you're looking for a good looking black bow to match FoW armor I would suggest the following:
Dead Bow - You can add black dye to this, but it won't make a huge difference. Nundak's Recurve is also a good less expensive alternative to this.
Horn Bow ("flesh" skin) - these can be almost completely dyed and while I've never seen one dyed black, I'm pretty sure it would look good. (http://gw.gamewikis.org/wiki/Hornbow)
Storm Bow - It's not black, but it looks good with fissure and it's the best looking choice if you want a longbow style bow.
Elswyth's Long bow or Elswyth's Recurve - Both of these have the Shadow Bow skin which is a nice looking black bow
Shadow Bow - see above
Drago's Flatbow - This isn't black either, but it's one of the best looking Flatbows available.
Swiftscale's Shortbow - Technically this is a green bow, but it's the best looking shortbow imho.
Hope this helps. Of course as always check Guild Wiki if you wanna see a pic of any of these.
http://gw.gamewikis.org/wiki/Main_Page
. A list of black bows would be ideal but understand if u cant be arsed, thanks for your time
