Good to know I'm not alone. I've not returned mine yet. I kinda wanna wait to see if a lot of others have the problem and it's a firmware problem, or universal problem. I hate having to return things.
I was doing some tests and got it to mess up the image for me some of the time. If I turn the camera on quickly and take a shot, or if it turns itself off on it's own and I wake it up with the shutter and take a shot really quick, I sometimes get that problem with pink images. It's always been just the first shot, and it's only when I take a shot really quickly after turning on the camera, and even then it's only sometimes when I do that. One time it gave me a weird "predator" (the movie) effect where everything looked posterized. I use Transcend CF card and an eye-fi x2 pro card. I can't remember for sure, but I think it still did it when I took the eye-fi card out and only shot raw to CF, but I'm not entirely sure. There was a string of a few minutes where I could get it to do it every time. Now I can't get it to do it. If I recall, it might have been sitting in the sun and was warm when I got it to shoot the pink shot. Again, not entirely sure though.
I'll keep testing. Maybe you can look at your pink shots and see if they were the first shot when you turned the camera on.
Oh and to clarify, the problem showed up on the camera screen, and on the CF raw file, and the SD jpg file. And it showed up in Lightroom4, and in DPP.
I have a feeling it's that the camera will sometimes release the shutter to take a picture before the processor is fully ready to process the image.