[dimarik]

Можно вообще без индексов обойтись.

import flash.geom.ColorTransform;
 
var RED:	ColorTransform = new ColorTransform(1, 0, 0, 1, 255, 0, 0, 0);
var BLACK:	ColorTransform = new ColorTransform(1, 1, 1, 1, 0, 0, 0, 0);
 
var app:	MovieClip = this;
AsBroadcaster.initialize(this);
 
var i:		Number = 1;
var but:	MovieClip;
 
while (but = this["button_text" + i++]) {
	app.addListener(but);
 
	but.transform.colorTransform = app.BLACK;
 
	but.release = function(target:MovieClip):Void {
		this.transform.colorTransform = this === target ? app.RED : app.BLACK;
	};
 
	but.onRelease = function():Void {
		app.broadcastMessage('release', this);
	}; 
}