Help with dynamically changing color of my movieclip in flash with xml

I am trying to create a button that will change the color of a movieclip from dark brown to green color 355A46 (basically this is the background color of flash movie) via an xml document. Does anyone know how to do this. I have found code to do it with actionscript but i am trying to do it by accessing an xml doc and cant find information on this anywhere…thanks so much for your help. Laura

Here is a link to my fla file to see what i am talking about

http://www.awenarts.com/coffeequiz2.zip

Any help is deeply appreciated!