habitica-android/Habitica/res/layout/dialog_habitica_secondary_button.xml

<?xml version="1.0" encoding="utf-8"?>
<Button xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    style="@style/HabiticaButton.Borderless"
    android:textColor="@color/brand_400">

</Button>