There was a thread here somewhere with pictures of all 4 drivers. As far as I remember first are black, then they had some whiteish/transparent, then the third had a yellow/brownish which had the problems.
Just checked the ones I got and they are white/transparent. I still think the treble is a little too big for me but I don't get fatigued and they don't sound harsh or painful like the DT990s did for me. Which is good. The headphones are comfortable, I am even wearing glasses and they still feel fine, not too good but not annoying either. Still, I actually am surprised how big they are.
Also, getting the pads back on again was quite irritating but I managed.