packages/EasterEgg/res/drawable/octo_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <gradient android:angle="-90"
        android:startColor="#FF205090"
        android:endColor="#FF001040"
        android:type="linear"
        />
</shape>