Easy Question-Make Text appear when a button is clicked

programming flash
1

I have a simple question for someone --Im very new at Flash.

I have a box and 3 different colored buttons at the left. When a person clicks the red button the box turns red, green button turns the box green, etc.

My question is I would like the text color of the box to appear under the box. Here is my code to turn the box red. What line would i add to have the word Red show up under the box when the red button is clicked. Do I type the word Red and make it a movie clip? Then what?
red_btn.onRelease = function() {
var rimColor_color = new Color(box_mc);
rimColor_color.setRGB(0xFF0000);

Thanks