I love this little guy, so here's more of him (the rest of the background is also slightly darker to increase readability of white text on brighter backgrounds):
It is a typical MetaMorph theme. It uses the xml format. Does require a reboot since the framework is being modified. Dark Edge only. THIS ONLY WORKS ON DARK EDGE.
The reason for this is on all other roms there is no way to change the lock screen background. In Dark Edge, xeudoxus got around this by editing the framework so that it calls an existing unused image and displays it in the background. I understand how to do this, but making sure it doesn't break phones is another story..