code: public Paint getCheckBoxBulletPaint(Shape s, CommonControlState type) {
          return createCheckMarkGradient(s, getCheckBoxBulletColors(type));
      }
docs: Create the paint for the check mark.
  
  @param  s    the check mark shape. Used for bounds.
  @param  type the color type to create.
  
  @return the paint to use for the check mark.