The light sabers on the Reliance video aren't the original shots but they don't look like computer recreations either. Are they the original animation composited digitally?
On a side note, over at Home Theater Forum, in the thread on restoring The Alamo, Robert Harris has some hard numbers on what a basic scan and color correction of 35mm elements actually cost and they're so low, it's embarrassing to think there are still people claiming Lucasfilm /Disney can't possibly achieve a decent blu-ray of the originals. (And while you're there, you can also read comically overwrought handwringing about Disney making the attempt in the Star Wars thread. I really can't get enough of blogger types carrying water for billion dollar companies.)