Found a way:
[self.navigationController.navigationBar setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
[UIColor whiteColor],UITextAttributeTextColor,
[UIColor whiteColor], UITextAttributeTextShadowColor,
[UIFont fontWithName:@"HelveticaNeue-Bold" size:16.0], UITextAttributeFont, nil]];
self.navigationItem.title = @"My Account";
You need to set TextAttributes or won't work.