Here's a description of the Ed8LE from the Ultrasone US shop (haphazard spelling theirs):
So I can well imagine that the "foggy glow" that MuppetFace described is down to all those extra layers of clear-coat (not found on the other Ed8s?).
The clear coating in only on the wooden inlay. It gives it a really nice almost glass-like finish. The ruthenium on the other hand almost looks like it was buffed to get that velvety look. I'm pretty sure there isn't any extra coating on the ruthenium compared to the other Ed. 8s though.