I'm not sure how it'd work with a LED strip blade like Hyper's but on Luxeons it has a "distinctive" look. It gives a thin bright core up the blade. It's very reminisent of the old posters.
It's designed to show-off his driver. It's dimming in and out is highlighted by having a "core" and makes me not miss the scroll of LED strips. I personally love the look.
Here's an amber LED of mine with the blade film:
That's a pretty darn accurate shot of the blade too. The flare isn't quite so "cinematic" because of the lens flare my camera gave it, lol. On Monday I can take a green LED pic as that is when my order comes in with the quick disconnects for it. (I forgot I needed an extra on the first order :-\ ) I could get a red too whenever my Vader ESB arrives in the mail.
EDIT to make image clickie ;D