Change UISearchBar textColor not working

I am using google places API for autoComplete widget. I am showing the full screen control in ios 9+ using swift. I am adding a full control as given in the docs.

I have added the code as shown in the docs. Now I want to change the searchBar text color to whiteColor.

So I tried this

UITextField.appearanceWhenContainedInInstancesOfClasses([UISearchBar.self]).textColor = UIColor.whiteColor()

But I am not getting the desired behaviour. Below is the screenshot

This has been given in Docs

https://developers.google.com/places/ios-api/autocomplete#use_a_table_data_source

But this is not working. I need help with regarding to this.

You need to create an extension like follwoing:

public extension UISearchBar {

    public func setNewcolor(color: UIColor) {
        let clrChange = subviews.flatMap { $0.subviews }
        guard let sc = (clrChange.filter { $0 is UITextField }).first as? UITextField else { return }
        sc.textColor = color
    }
}

And change color using following code:

 controller.searchBar.setNewcolor(UIColor.redColor())

Output is :

Update:

For the change color of searchBar text for the GMSAutocompleteViewController you need to do following code:

let searchBarTextAttributes: [String : AnyObject] = [NSForegroundColorAttributeName: UIColor.redColor(), NSFontAttributeName: UIFont.systemFontOfSize(UIFont.systemFontSize())]
UITextField.appearanceWhenContainedInInstancesOfClasses([UISearchBar.self]).defaultTextAttributes = searchBarTextAttributes

That change the text out put like following image:

And if you wish to change placeholder text and it's color for searchBar. You need to do following code:

let placeholderAttributes: [String : AnyObject] = [NSForegroundColorAttributeName: UIColor.whiteColor(), NSFontAttributeName: UIFont.systemFontOfSize(UIFont.systemFontSize())]

let attributedPlaceholder: NSAttributedString = NSAttributedString(string: "Find a place", attributes: placeholderAttributes)
UITextField.appearanceWhenContainedInInstancesOfClasses([UISearchBar.self]).attributedPlaceholder = attributedPlaceholder

It will be show like: