java/com/android/incallui/video/impl/res/color/videocall_button_icon_tint.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:color="#ff000000" android:state_checked="true"/>
  <item android:color="#ffffffff"/>
</selector>