WordPress/src/main/res/drawable/stats_widget_header_background.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <item>
        <shape android:shape="rectangle" >
            <solid android:color="@color/blue_wordpress" />
            <corners android:topLeftRadius="1dp"
                android:topRightRadius="1dp"/>
        </shape>
    </item>

</layer-list>