Are you still rating '96 a hold?
Yes, absolutely. It's not that it's not drinkable now, it's that there's still upside. As for the 2000, there's so much upside with that wine that it seems to me to be an abject waste of potential to drink it now.
It's coloring, though, which leads me to worry a bit about its continuing longevity.
Could just be cork variation. I was eyeing mine a few weeks ago, and didn't notice anything. But I've had some pretty dark CFE (and CSH), even from the Trimbach cellars, that still tasted youthful. So unless you're worried about premox, I wouldn't be in any hurry to drink the '96.