Very cool. I actually like it greyscale too, I think it makes it kinda more bold that way, stands out more I guess. Although I'm sure it'd still look good in more colors as well. As for the female figure idea, I guess I just always think of that one as unisex anyway, especially since even though most of us are girls, none of us hardly ever wear skirts or dresses so the male symbol works fine heh. Basically I think it's great for a more universal, unisex, unispecies symbol. Nice job. :)