Android : indicatorColor not working with pstsTabBackground in astuetz/PagerSlidingTabStrip?

I used this library and it's working fine, I tried to add touch effect (selector) for the tabs using:

app:pstsTabBackground="@drawable/tab_selector"

and it's working fine, but the indicator is not working. However, indicator working when I use android:background but I can't set touching effect using this approach.

How to solve that?