Change movieClip color with xml

Howdy All!
I am having a hell of a time with this. I have a map where each region is a movieclip with some roll-over functionallity. All I want to do is call an xml file with a list of the MC’s that has a hex color for each region when the swf is loaded.

The reason for the xml is that the client wants the colors to be editable, but cant work in the fla.

Can someone help? Thanks a ton