code: public static Color slightlyDarker(final Color color) {
          return new Color(Math.max((int) (color.getRed() * COLOR_SCALE_FACTOR), 0),
                  Math.max((int) (color.getGreen() * COLOR_SCALE_FACTOR), 0),
                  Math.max((int) (color.getBlue() * COLOR_SCALE_FACTOR), 0));
      }
docs: Moderated version of Color.darker()
  
  @param color
  @return