MC color change through actionscript

I am trying to link my list component to the movieclips drawn from an xml…basically my app reads an xml and draws a floorplan of booths…the list is populated with exhibitors and is linked to the rented booths on the floor plan…currently when you click an exhibitor in the list, the alpha of the booth changes to 10…then back to 100 when you choose another exhibitor…i want to change the color of the booth to something else like yellow…is this possible through actionscript?