How to change the horizontal line on top of active tabbar item in Android

ionic-v1
1

In Android, the active tab item has a dark horizontal line on top of it.

Below is a screenshot shows the activated tab, “Contrast” has a horizontal bar on top of it.

image

How do I change the color of this horizontal bar to the theme. In the screenshot the theme color is green (or Ionic’s “balanced”). How do I make the horizontal bar have the same theme color as the activate tab item?

Thanks.