I've been printing this week with the clear XT, and no matter what temp I use it still comes out as a translucent white. It does adhere a little too well, and I let it completely cool to room temperature before I start to take it off. If it's at all stubborn, I pop it into the fridge for 15 minutes and then it comes off quite easily.
Not sure what advice I can give you foehnsturm as the clear prints really well for me if I use a bed temp from 80-83 depending on where I'm printing on the bed. I found I would get some slight warping if I printed away from the middle, but increasing it a few degrees seemed to do the trick. The best results I had as far as layer adhesion is at 255-260, but my UM2 is all stock.