black particles

i was makin this flower thing but the hairs on it turn black

has anyone else had this or know why it does this?
(pic attached)

edit: o ya, this is the latest svn


ok, instead of ao i used aao and it gave me this



what color is your ambient light?
what color is the material for the particles?

What are you aiming for?

everything is at default exept the normal color(defuse? i think its called)

and then theres a noise and cloud texture in there too, but the grass and plant have sepperate textures and they both get it, so i think its lighting related may be

edit: and iv used many different types of lights and i get the some thing, evin with ao off it does it