title: Custom UIButton not highlighting when touched
body: <p>I have a method that creates a custom UIButton that allows me to change the color of the button using QuartzCore. But the buttons don't highlight when touched.</p>
  
  <pre><code>- (UIButton *)makeHeaderButton {
      UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
      UIFont *textFont = [UIFont boldSystemFontOfSize:12];
      UIColor *textColor = [UIColor colorWithRed:80/255.0 green:109/255.0 blue:145/255.0 alpha:1.0];
      UIColor *backgroundColor = [UIColor colorWithRed:250/255.0 green:250/255.0 blue:250/255.0 alpha:1.0];
      [button setTitleColor:textColor forState:UIControlStateNormal];
      button.titleLabel.font = textFont;
      button.autoresizesSubviews = YES;
      button.layer.cornerRadius = 8;
      button.layer.borderWidth = 1;
      // next 2 properties set using QuartzCore class, no other way to set button colors
      button.layer.borderColor = [UIColor grayColor].CGColor;
      button.layer.backgroundColor = backgroundColor.CGColor;
      button.clipsToBounds = YES;
      return button;
  }
  </code></pre>
  
  <p>How can I make these buttons highlight like a regular round rect button?</p>