Color renders look darker back in FCP, and grainy footage

Hi All,

Did some research on this and can't seem to find anything. I sent a timeline of various clips (HD 720p and some NTSCDV client clips rendered out in the Animation codec from AE). I did the corrections in Color, rendered and sent the sequence back to FCP. The clips all look much darker back in FCP. The sequence settings match the ProResHQ sent back from Color. However, on QT export out of FCP, the clips lighten back up. I'm saving up for an HD monitor, but right now all I have is an Apple Cinema Display calibrated with a Monaco Optix Pro.

Also, on the HD footage, it was shot at night on the Panasonic HPX 500. The footage looks great in Color's small window, but looks grainy on full size export. I would expect some graininess, and pushing the blacks likely worsens this, but on HD progressive footage from a decent camera with a decent DP, I thought the final output would have looked better.

Thanks for any thoughts/advice,
~Chris