// self.tabBar.barTintColor = RGB(0, 0, 0);
[[UITabBar appearance] setBarTintColor:[UIColor clearColor]];
[[UITabBar appearance] setBackgroundImage:[UIImage new]];
// self.tabBar.barTintColor = RGB(0, 0, 0);
[[UITabBar appearance] setBarTintColor:[UIColor clearColor]];
[[UITabBar appearance] setBackgroundImage:[UIImage new]];