Xee 3.0 support colorsync. But its support is not so properly.
Here is sample. Following file is captured screen of my MBPR desktop.
http://www.kbdmania.net/images/screenshot.png
In Safari, and Apple preview app, this file will de displayed normally. But in Xee 3.0b2, It displayed yellowish.
Please check this issue. Also, I uploaded ICC of my MBPR. The file is ;