title: How to change to its original View colour when side menu closed in swift
body: <p>I am using left side menu from this pod <a href="https://github.com/jonkykong/SideMenu" rel="nofollow noreferrer">https://github.com/jonkykong/SideMenu</a>. here I have given storyboard side menu button to UISideMenuNavigationController <strong>Present Modually Segue</strong> and side menu is working fine but my issue is, if I click(open) side menu button then I have changed background view colour which is not changing to its original colour when I close side menu.</p>
  <p>like below mentioned answer if i change my code:</p>
  <pre><code>import UIKit
  import SwiftKeychainWrapper
  import SideMenu
  
  class ProfileViewController: UIViewController, UITextFieldDelegate {
  
    override func viewDidLoad() {
        super.viewDidLoad()
    }
   @IBAction func sideMenubtn(_ sender: Any) {
     view?.backgroundColor = UIColor(white: 1, alpha: 0.9)
  }
  }
  
  
  extension ProfileViewController : SideMenuNavigationControllerDelegate 
  {
  func sideMenuWillDisappear(menu: SideMenuNavigationController, animated: Bool) {
    view?.backgroundColor = UIColor.white
  }
  }
  </code></pre>
  <p>i got this error:</p>
  <blockquote>
  <p>Use of undeclared type 'SideMenuNavigationControllerDelegate'</p>
  <p>Use of undeclared type 'SideMenuNavigationController'</p>
  </blockquote>
  <p>how do I remove this colour when I close the side menu, please help me.</p>