FairEmail/app/src/main/res/layout/toast.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/toast_background"
    android:orientation="vertical"
    android:paddingStart="12dp"
    android:paddingTop="6dp"
    android:paddingEnd="12dp"
    android:paddingBottom="6dp">

    <TextView
        android:id="@android:id/message"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="Message"
        android:textAppearance="@style/TextAppearance.AppCompat.Small"
        android:textColor="@color/colorToastForeground" />
</LinearLayout>