Tela
/res/values/css.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="estilo1">
<item name="android:textSize">14sp</item>
<item name="android:textColor">#ffffff</item>
<item name="android:background">#ff0000</item>
<item name="android:textStyle">italic</item>
</style>
<style name="estilo2">
<item name="android:textSize">16sp</item>
<item name="android:textColor">#00ffff</item>
<item name="android:background">#0000ff</item>
<item name="android:textStyle">bold</item>
</style>
</resources>
Layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
style="@style/estilo1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Outro texto" />
<TextView
style="@style/estilo2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text" />
</LinearLayout>