Attached Link: http://www.renderosity.com/viewed.ez?galleryid=128385&Start=1&Artist=kumo&ByArtist=Yes

i done a similar effect in ice, all i done was select the internal head parts and coloured them black, and set all the ambient highlight ect to whites and pale blues, i could have gone more transparent if i wanted to, also you could try using a darker back groung BEST OF LUCK