code: private void doHighlight(String colorMode) throws WidgetException {
  		if (!(getGUIDriver() instanceof HighlightProvider)) {
  			return;
  		}
  		HighlightProvider highDriver = (HighlightProvider) getGUIDriver();
  
  		if (highDriver.isHighlight()) {
  			setBackgroundColor(highDriver.getHighlightColor(colorMode));
  		}
  	}
docs: Highlight a web element by getting its color from the map loaded from
  client properties file
  @param colorMode
  the mode which decides the color of highlight
  @throws WidgetException