iOS / Swift - A base view controller for dismissing keyboard and applying color theme

BaseViewController.swift

import UIKit

class BaseViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        listenForTapsOnViewToDismissKeyboard()
        applyGlobalColorTheme()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    func listenForTapsOnViewToDismissKeyboard() {
        let tapRecognizer = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
        self.view.addGestureRecognizer(tapRecognizer)
    }

    func dismissKeyboard() {
        self.view.endEditing(true)
    }

    private func applyGlobalColorTheme() {
        setBackgroundColor()
        styleNavBar()
    }

    private func setBackgroundColor() {
        self.view.backgroundColor = UIColor.grayColor()
    }

    private func styleNavBar() {
        setNavBarColor()
        setNavBarTitleTextColor()
        setNavBarBackTextColor()
    }

    private func setNavBarColor() {
        self.navigationController?.navigationBar.barTintColor = UIColor.lightGrayColor()
    }

    private func setNavBarTitleTextColor() {
        self.navigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.grayColor()]
    }

    private func setNavBarBackTextColor() {
        self.navigationController?.navigationBar.tintColor = UIColor.blueColor()
    }

}