wulkanowy-mod/app/src/main/res/drawable-v23/layer_splash_background.xml

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape>
            <solid android:color="@color/colorPrimaryDark" />
        </shape>
    </item>
    <item
        android:width="200dp"
        android:height="200dp"
        android:drawable="@drawable/img_splash_logo"
        android:gravity="center" />
</layer-list>