Actionscript 3 Tween color change for text field problem

[samohtwerdna]

hello all,

I have a client who would like to have all the text on the site transition from one color to the next at the same time. I hacked up bits and pieces of code and came up with this for one text field:

import fl.transitions.Tween;
import fl.transitions.TweenEvent;
import fl.transitions.easing.Strong;
import fl.motion.Color;
import flash.events.Event;
import flash.geom.ColorTransform;


changeColor();
var c:Number = 0;
var tfs:Number=4; //number of text fields.
 function changeColor()
 {
    var colorInfo:ColorTransform=ex_txt.transform.colorTransform;
    var alphaOver:Tween=new Tween(ex_txt,"alpha",Strong.easeInOut,0,1,5,true);

     
    if (c==0) {
        c++;
        //gray to red
    }else if(c==1){
        c++;
        //red to gray
    }else if(c==2){
        c++;
        //gray to blue
    }else if(c==3){
        c++;
        //blue to gray
    }else if(c==4){
        c=0;
    }
    
    var text_color:uint=0x999999;
    var final_color:Array = new Array();
    final_color[0] = 0x999999; //gray
    final_color[1] = 0xFF0000; //red
    final_color[2] = 0x0066CC; //blue
    final_color[3] = 0xFF66CC; //pink
    final_color[4] = 0x00CC66; //green
    final_color[5] = 0x999999; //gray
    
    alphaOver.addEventListener(TweenEvent.MOTION_CHANGE,tweenToFinal);
    function tweenToFinal(event:TweenEvent):void
    {
        colorInfo.color = Color.interpolateColor(final_color[c],final_color[c+1],event.position);
        ex_txt.transform.colorTransform=colorInfo;

    }
      
    
 }
setInterval(changeColor, 6000);

this does cycle through my colors but at the end of an interval there is a bump or a skip so the transition is interupted with what looks like a flicker.

Any ideas how to fix this??