FIX for Dell U3011 displaying YPbPr instead of RGB via display port

I kind of hacked my way around and got my Dell U3011 to properly display RGB instead of YPbPr (or YCbCr) over a mini display port to display port cable for my MacBook Pro Retina 15"! WOOHOO! no need for that stupid $150 dual link dvi to mini displayport adapter anymore, which was incredibly flakey and sometimes the monitor turned on, and sometimes it didn't etc... lots of problems.
Download the file from:
http://www.8mmdesign.com/u3011-rgb-ypbpr-fix/DisplayVendorID-10ac.zip
unzip into:
/System/Library/Displays/Overrides
It will create a new directory called:
/System/Library/Displays/Overrides/DisplayVendorID-10ac
Then reboot the system, and it should work. Go to system preferences, displays, color, and set the display profile to Color LCD.
This will *ONLY* work for the Dell u3011 and it is completely UNTESTED. Use at your OWN RISK. But you should have proper RGB colors after doing this.
Good luck!

This post helped me: http://ireckon.net/2013/03/force-rgb-mode-in-mac-os-x-to-fix-the-picture-quality -of-an-external-monitor
I have an Onkyo AV Receiver TX-NR414, I'm using the HDMI passthru (connecting Mac to AVR, then AVR to TV) and my Macs where giving bad colors.
Connecting the Mac directly to the TV was ok.
So the problem was the need to force the Mac to output RGB, the above linked blog post has a link to a Ruby script that will create a profile with RGB output. Follow the instructions and it will get it right.
Thanks to this thread too:https://discussions.apple.com/thread/4880467

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