zumo_2.0_android/app/src/main/res/drawable/icon_info_down.xml

<vector android:height="14dp" android:viewportHeight="56"
    android:viewportWidth="56" android:width="14dp" xmlns:android="http://schemas.android.com/apk/res/android">
    <path android:fillAlpha="0.7" android:fillColor="#00000000"
        android:fillType="evenOdd"
        android:pathData="M48,17.333l-20,20 -20,-20"
        android:strokeAlpha="0.7" android:strokeColor="#666" android:strokeWidth="4"/>
</vector>