[ulik]

public class MyObject {
	private var color:uint;
 
	public function MyObject(){}
 
	public function get value():uint
	{
		return color;
	}
 
	public function set value(val:uint):void
	{
		color = val;
                colorChanged();
	}
        private function colorChanged():void
        {
                // your logic
        }
}

* = зло