Actually, to some folks it may just look like "dirty thread", which to be perfectly honest was my own personal reaction to it as I watched it dry. Anyway, I started an earring with it (Grand Aura from my Up and Tat 'Em book) and I think it will work nicely for the antiqued look.
BTW, the organizer specifically asked if I would be demonstrating tatting. She said, (and I quote)
"It’s always so much fun to watch you do your thing, so that would be great if you can."