What do you think, if I released this in xscreensaver, would someone sue me? If so, who? Berkeley Systems doesn't exist any more (apparently having been gobbled up by Sierra Online in 1998 or so, who where then gobbled up by Flipside and/or Vivendi?) After Dark was officially discontinued in 1999.
I'd like to think that whoever owns the copyright on these images doesn't care, or perhaps doesn't even know that they do, but I can't really figure out who that might be.
The safe thing would be to re-draw (or re-render) the images from scratch, but I have not the artistic skill for that.