If anyone wants to fix the green shift on the Retina iMac, here you go. This was calibrated with an i1 Display Pro. There are variances between panels, I'm sure, but these Retina iMac panels should be *fairly* similar, so you should see an improvement here. Enjoy!
https://www.dropbox.com/s/0mwe0jtbh7joa5s/iMac Retina calibrated.icc?dl=0
https://www.dropbox.com/s/0mwe0jtbh7joa5s/iMac Retina calibrated.icc?dl=0