 			var xml:XML = <HBox width="100%" height="100%" horizontalGutter={horizontalGutter} padding={padding} xmlns="laml.display">
 							<Button id={LEFT_BUTTON} width="30" height="100" backgroundColor="#ff0000" />
 							<Component width="100%" height="100%">
-								<Row id={CONTENT_CONTAINER} excludeFromLayout="true" backgroundColor="#ff0000" horizontalGutter={horizontalGutter} padding={padding} />
+								<Row id={CONTENT_CONTAINER} excludeFromLayout="true" horizontalGutter={horizontalGutter} padding={padding} />
 								<Component id={CONTENT_MASK} backgroundColor="#0000ff" width="100%" height="100%" />
 							</Component>
 							<Button id={RIGHT_BUTTON} width="30" height="100" backgroundColor="#ff0000" />

			contentContainer.invalidateDisplayList();
			contentContainer.render();

			contentContainer.mask = contentMask;
			contentContainer.view.cacheAsBitmap = true;
		}
		
		private function getItemSize(w:Number):Number {

		protected function configureChildren():void {
			contentMask = getChildById(CONTENT_MASK);
			contentContainer = getChildById(CONTENT_CONTAINER);
			
			leftButton.addEventListener(MouseEvent.CLICK, leftButtonClickHandler);
			rightButton.addEventListener(MouseEvent.CLICK, rightButtonClickHandler);
