Changing colors with flash and actionscript

**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 1: The class or interface 'ColorTransform' could not be loaded.
     var endColor:ColorTransform = new ColorTransform(rect,null);

**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 8: The class or interface 'ColorTransform' could not be loaded.
     function interpolateColor(start:ColorTransform, end:ColorTransform, t:Number):ColorTransform {

**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 9: The class or interface 'ColorTransform' could not be loaded.
     var result:ColorTransform = new ColorTransform();

**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 22: The class or interface 'ColorTransform' could not be loaded.
     var startColor:ColorTransform = new ColorTransform(); // default color, no tint

**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 23: The class or interface 'ColorTransform' could not be loaded.
     var endColor:ColorTransform = new ColorTransform();

**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 31: The class or interface 'Tween' could not be loaded.
     var tween:Tween = new Tween(clip, "", Strong.easeOut, 0, 1, 50);

**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 39: The class or interface 'TweenEvent' could not be loaded.
     function tweenTransform(event:TweenEvent):void {

Total ActionScript Errors: 7 	 Reported Errors: 7

**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 1: The class or interface 'ColorTransform' could not be loaded.
     var endColor:ColorTransform = new ColorTransform(rect,null);
 
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 8: The class or interface 'ColorTransform' could not be loaded.
     function interpolateColor(start:ColorTransform, end:ColorTransform, t:Number):ColorTransform {
 
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 9: The class or interface 'ColorTransform' could not be loaded.
     var result:ColorTransform = new ColorTransform();
 
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 22: The class or interface 'ColorTransform' could not be loaded.
     var startColor:ColorTransform = new ColorTransform(); // default color, no tint
 
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 23: The class or interface 'ColorTransform' could not be loaded.
     var endColor:ColorTransform = new ColorTransform();
 
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 31: The class or interface 'Tween' could not be loaded.
     var tween:Tween = new Tween(clip, "", Strong.easeOut, 0, 1, 50);
 
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 39: The class or interface 'TweenEvent' could not be loaded.
     function tweenTransform(event:TweenEvent):void {
 
Total ActionScript Errors: 7 	 Reported Errors: 7