Wow! The way these lines are laid out, you could change the colors a thousand ways and probably get 998 great results. I'm not into abstractions. I'm one of those concrete people who are mixed up and set in their ways, but I really like this image.
Quite Enjoying the view! Another way you may want to extend the depth of content more is add curves into the 'bloodlines' and giving them another dimension of existence to the piece..
Must say thing texture of the bloodlines is my favorite part.
don