code: public static FillInfo createFill(String color, float opacity) {
  		FillInfo fillInfo = new FillInfo();
  		if (color != null) {
  			fillInfo.getCssParameterList().add(createCssParameter("fill", color));
  		}
  		fillInfo.getCssParameterList().add(createCssParameter("fill-opacity", opacity));
  		return fillInfo;
  	}
docs: Creates a fill with the specified CSS parameters.
  
  @param color the color
  @param opacity the opacity
  @return the fill