//// General Declarations
 CGContextRef context = UIGraphicsGetCurrentContext();

 //// Shadow Declarations
 UIColor* shadow = [UIColor blackColor];
 CGSize shadowOffset = CGSizeMake(0, -0);
 CGFloat shadowBlurRadius = 15;


 //// Rectangle Drawing
 rectanglePath = [UIBezierPath bezierPathWithRect: CGRectMake(8, 8, 44, 44)];
 CGContextSaveGState(context);
 CGContextSetShadowWithColor(context, shadowOffset, shadowBlurRadius, shadow.CGColor);
 [[UIColor whiteColor] setFill];
 [rectanglePath fill];
 CGContextRestoreGState(context);

- (void)makeRed {
  NSLog(@"makeRed");
  CGContextRef context = UIGraphicsGetCurrentContext();
  // Shadow Declarations
  UIColor* shadow = [UIColor redColor];
  CGSize shadowOffset = CGSizeMake(0, -0);
  CGFloat shadowBlurRadius = 15;
  CGContextSaveGState(context);
  CGContextSetShadowWithColor(context, shadowOffset, shadowBlurRadius, shadow.CGColor);
  [[UIColor whiteColor] setFill];
  [rectanglePath fill];
  CGContextRestoreGState(context);
}

- (void)makeRed;
{
  self.shadowColor = [UIColor redColor];
  [self setNeedsDisplay];
}

CGContextSetShadowWithColor(context, shadowOffset, shadowBlurRadius, self.shadowColor.CGColor);