I could find 2 methods to change the back button of navigation bar
1)[self.navigationItem.backBarButtonItem setTintColor:[UIColor colorWithRed:0 green:0.3294 blue:0.5764 alpha:1]];
though looking simple this method is not working..dont know why?
2)[[UIBarButtonItem appearance] setTintColor:[UIColor colorWithRed:0 green:0.3294 blue:0.5764 alpha:1]];
This method is working fine on IOS5..But this method is not present in lower versions thus causing the application to crash.
Is there any way out to change color of back bar button?