objective-c : styling navigation bar and status bar on the iOS7

snippet.m

//styling navigation bar and status bar on the iOS7

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // style the navigation bar
    UIColor* navColor = [UIColor colorWithRed:0.97f green:0.37f blue:0.38f alpha:1.0f];
    [[UINavigationBar appearance] setBarTintColor:navColor];
    [[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];
    [[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor whiteColor]}];
    
    // make the status bar white
    [UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleLightContent;
    
    return YES;
}