Instantiation attempted on a non-constructor

programming flash
1 
package
{
    import flash.display.Bitmap;
    import flash.display.Sprite;
    import flash.geom.ColorTransform;
    
    public class Color extends Sprite
    {
        public var Picture:Class;
        
        public function Color()
        {
            transformColor();
        }
        
        private function transformColor():void
        {
            var pic:Bitmap = new Picture();
            addChild(pic);
            
            pic.transform.colorTransform = new ColorTransform(-1, -1, -1, 1, 
                                                              255, 255, 255, 0);
        }
    }
}

Using this as the document class for a separate fla file, i’m getting this error when the movie is exported:

**TypeError: Error #1007: Instantiation attempted on a non-constructor.

**why is this?