Changing a button's color via a mouse click

programming flash
1

I’m trying to learn a simple way to code a button’s color to change when you click on the button itself. I got the button’s alpha to work by doing the following: Create a text field with the word “Preflight” and convert it to a button. Drag the button onto the stage and give it an instance name of “Preflight1”. On the first frame of the timeline, insert the following code:

import flash.events.MouseEvent;
import flash.geom.ColorTransform;

Preflight1.addEventListener(MouseEvent.CLICK, Preflight1Click);
function Preflight1Click(event:MouseEvent):void{
Preflight1.alpha -=.1;
}

Now when you test the movie, anytime you click the button “Preflight” the button’s alpha drops (dims) by 10%. Works perfect and easy. Now, how can I do this exact same thing with the button’s color? When you click the button, its color changes to some new color? I’ve tried colorTransform, but no luck.

Thanks much,

Carl