sakura/public/browserconfig.xml

<?xml version="1.0" encoding="utf-8"?>
<browserconfig>
    <msapplication>
        <tile>
            <square70x70logo src="/content/images/icons/ms-icon-70x70.png" />
            <square150x150logo src="/content/images/icons/ms-icon-150x150.png" />
            <square310x310logo src="/content/images/icons/ms-icon-310x310.png" />
            <TileColor>#9475b2</TileColor>
        </tile>
    </msapplication>
</browserconfig>