How to change the colour of the 'Cancel' button on the UISearchBar in Swift

Question

I have added a UISearchBar to the top of my PFQueryTableViewController. I have changed the colour of the searchBar to be the colour of my app, but

Answer 1

The Swift 4.2 version, based on other answers:

let cancelButtonAttributes: [NSAttributedString.Key: Any] = [NSAttributedString.Key(rawValue: NSAttributedString.Key.foregroundColor.rawValue): UIColor.orange]
UIBarButtonItem.appearance(whenContainedInInstancesOf: [UISearchBar.self]).setTitleTextAttributes(cancelButtonAttributes, for: .normal)