UIButton subclass

MyButton.m

// How to subclass UIButton, given that it uses a static constructor so you can't override init.

@interface MyButton : UIButton
...
@end

@implementation MyButton

+ (instancetype)buttonWithType:(UIButtonType)buttonType {
    MyButton *button = [super buttonWithType:buttonType];
    [button postButtonWithTypeInit];
    return button;
}

/// Because we can't override init on a uibutton, do init steps here.
- (void)postButtonWithTypeInit {
    [self setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [self setTitleColor:[UIColor grayColor] forState:UIControlStateHighlighted];
}
...