Look out for the 10.3 drivers, which according to the below article, will support "Per-Display Colour Adjust". Maybe the 10.3 Beta's floating might have this already?
http://www.elitebastards.com/index.php?option=com_content&view=article&id=1245&catid=16%3Aeb-commentary&limitstart=2
Catalyst 10.3 also features the ability to adjust colour on a per-monitor basis, which allows you to compensate for differences in brightness and contrast between any screens in your Eyefinity configuration, which again should make for a more pleasant end-user experience, which can only be a good thing.