gistfile1.m

// change the color of the navigation bar
[[UINavigationBar appearanceWhenContainedIn:[UINavigationController class], nil] setBarTintColor:[RRHelper appBlue]];
 
// change the tint color of the navigation bar
[[UINavigationBar appearanceWhenContainedIn:[UINavigationController class], nil] setTintColor:[UIColor whiteColor]];
 
// change the title text attributes
[[UINavigationBar appearanceWhenContainedIn:[UINavigationController class], nil] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIColor whiteColor], NSForegroundColorAttributeName, [UIFont fontWithName:kFontRegular size:18.0], NSFontAttributeName, @0.5, NSKernAttributeName, nil]];
 
// change the bar button item properties
[[UIBarButtonItem appearanceWhenContainedIn:[UINavigationBar class], nil] setTintColor:[UIColor whiteColor]];
[[UIBarButtonItem appearanceWhenContainedIn:[UINavigationBar class], nil] setTitleTextAttributes: @{
       NSForegroundColorAttributeName:[UIColor whiteColor],
       NSFontAttributeName:[UIFont fontWithName:kFontRegular size:kFontSizeNavigationBarSmall],
       NSKernAttributeName:@0.5
} forState:UIControlStateNormal];