Fading away into darkness to avoid the burden of light.
3 different types:
Half and half:
http://i1034.photobucket.com/albums/...f-and-half.png
Pure Darkness:
http://i1034.photobucket.com/albums/...away-blank.png
C4D Darkness:
http://i1034.photobucket.com/albums/...-fade-away.png
Either way besides the 1 c4d used, all that was used to make this was the render and my own made tools.