Here is the source code for BrowserViewController.m: http://pastebin.com/w282kRm6
As you can see, in many different places I have attempted to implement the code correctly using self.navigationController.navigationBar.tintColor = [UIColor darkGrayColor];
, but nothing has managed to work.
self.navigationController.navigationBar.tintColor = [UIColor colorWithRed:0.56 green:0.69 blue:0.71 alpha:1.0];
It works for me.