Change of highlight color in UITabBar

I searched some pervious posts here said that changing the highlight color of UITabBar is not allowed by apple. But I found some new apps appear recently with different highlight col开发者_如何学编程or such as Viber.

If it is allowed, what code do i need in order to change the color?

Many Thanks.

---

As of iOS 5 there's a selectedImageTintColor property on the tab bar

UITabBar Class Reference - selectedImageTintColor