Visual View Hierarchy Debugging

- (void)debugSubview
{
    [self colorSubviewsForDebugParentView:self];
}

- (void)colorSubviewsForDebugParentView:(UIView*)view
{
    CGFloat hue = ( arc4random() % 256 / 256.0 );  //  0.0 to 1.0
    CGFloat saturation = ( arc4random() % 128 / 256.0 ) + 0.5;  //  0.5 to 1.0, away from white
    CGFloat brightness = ( arc4random() % 128 / 256.0 ) + 0.5;  //  0.5 to 1.0, away from black
    UIColor *color = [UIColor colorWithHue:hue saturation:saturation brightness:brightness alpha:0.25];
    view.backgroundColor = color;
    for (UIView *child in view.subviews){
        [self colorSubviewsForDebugParentView:child];
    }
}