seek_bar.xml
<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="@+android:id/SecondaryProgress"
android:drawable="@drawable/progress_cyan"/>
<item
android:id="@+android:id/progress"
android:drawable="@drawable/progress_red"/>
</layer-list>
this link help your more.
or you can try this