How to use it?

[gclsoft]

    [[UINavigationBar appearance] setBarTintColor:[UIColor midnightBlueColor]];
    NSShadow *shadow = [[NSShadow alloc] init];
    shadow.shadowColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.8];
    shadow.shadowOffset = CGSizeMake(0, 1);
    [[UINavigationBar appearance] setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:
                                                           [UIColor colorWithRed:255.0/255.0 green:255.0/255.0 blue:255.0/255.0 alpha:1.0], NSForegroundColorAttributeName,
                                                           shadow, NSShadowAttributeName,
                                                           [UIFont fontWithName:@"FontAwesome" size:21.0], NSFontAttributeName, nil]];
    // self.navigationController.navigationBar.barTintColor = [UIColor blueColor];
    //[self.navigationController.navigationBar setBarStyle:UIBarStyleBlackTranslucent];
    [[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];

How to change it to CRNavigationController?