well, OSX sends the ycbcr color signal to your screen and no RGB apparently...
therefore the colours are not interpreted as they should on the monitor (should be much better...). Personally I did not have this issue yet, so I cannot say if it is as bad as some people describe (or if there is almost no visible difference for some users?)
There is a way to force rgb:
http://www.ireckon.net/2013/03/forc...ix-the-picture-quality-of-an-external-monitor
holy cow, not sure if I did all that correctly, but my picture just got amazing. I couldn't get it to work in terminal, but a reboot seems to have forced it. I thought the picture was good before but now it is stunning. Truly incredible.
Now if I could only get rid of some of the distortion in the sound when running sound flower