here are a few pictures posted by somebody on flickr that show the yellow cast compared to a macbook. That is the default colorsync profile I believe:
http://flickr.com/photos/nikogu/544693237/
http://flickr.com/photos/nikogu/544575070/
http://flickr.com/photos/nikogu/544693237/
http://flickr.com/photos/nikogu/544575070/