Resizing movieclip to fullscreen

programming flash
1

I have a movie clip named “shapes” that I use as a pseudo-background for my .swf, I alter the color of the movieclip by using the following code;

on (press) {
var colorful = new Color("_root.shapes");
colorful.setRGB(0x003366);
}

so that each section of my site has a unique color. The problem is I want to publish this as fullscreen (Publish Settings, set Dimensions to “Percent” and Width and Height to 100). For this to look right I need the movieclip “shapes” to expand to 100%. Does anybody have ideas on how this can be done or maybe a better way of aproaching this?

Thanks