You can get desired result by making the following changes in color.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<drawable name="White">#ffffff</drawable>
<drawable name="Black">#000000</drawable>
<drawable name="Grey">#a9a9a9</drawable>
<color name="DarkGrey">#4F4F4F</color>
<color name="Green">#0F0</color>
<color name="TransparentGrey">#7F000000</color>
</resources>
and in actvity_main.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:background="@drawable/Black"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView android:textColor="@drawable/White"
android:layout_width="wrap_content"
android:text="Glowing Text"
android:layout_height="wrap_content"
android:padding="2dp"
android:shadowColor="@drawable/White"
android:shadowDx="0"
android:shadowDy="0"
android:shadowRadius="3" />
</LinearLayout>