if the theme you want to use the scrollbar entire application. We need to write custom theme. that ;
<application
.
.
android:theme="@style/AppTheme"
.
. >
and let's add scrollbar properties to sytles.xml
<resources xmlns:android="http://schemas.android.com/apk/res/android">
<style name="AppTheme" parent="Theme.Sherlock.Light.NoActionBar">
.
.
<item name="android:scrollbarThumbVertical">@drawable/shape_scrollbar_style</item>
<item name="android:scrollbarSize">5dp</item>
.
.
</style>
</resources>
and now you can add what you want visuality to drawable/shape_scrollbar_style.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<gradient
android:angle="45"
android:endColor="#103249"
android:startColor="#FF33B5E5" />
<corners android:radius="1dp" />
<stroke android:width="2dp"/>
</shape>