Well, it certainly looks like there are other examples, although that one is the only one in which there is video footage of it being altered.

But if you look at the lightsabers...there was definitely something done to them. I don't know if it is just because of the darkened levels that crush down the glow, but it really doesn't seem like it me, and the "electrical" crackly glow is now replaced with a more solid, stable glow. It looks like the cores have not just been dimmed down, but outright thinned out (i.e. erased). Whatever the case, the sabers look different, and it's probably no surprise that they look exactly like they do in the prequels and all subsequent media.

Here is an example, I'm just using this because I already had these caps on my website. This is not too extreme, but you can see how the blades have been thinned out. I don't think it's due to black levels, because on Vader's you can see that where there was originally white core there is now nothing (i.e. the bg and glow), so it's been re-touched from scratch, plus the black levels here are close to the original and wouldn't account for such drastic difference even if it were possible.

I would like to hear some thoughts on this though, as I don't believe the sabers have ever been included in either LFL's or 005's pages.