android - NestedScrollView scrollbar width doesn't change -

i getting around adding scrollbars (those ux guys, sheesh) nestedscrollview, can't width of scrollbars change 5dp (eyeball measurement).

i have style:

<style name="nestedscrollbarstyle">     <item name="android:scrollbarfadeduration">500</item>     <item name="android:scrollbars">vertical</item>     <item name="android:scrollbarstyle">insideinset</item>     <item name="android:scrollbarsize">160dp</item> </style> 

and, inside coordinatorlayout, have swiperefreshlayout nestedscrollview:

<android.support.v4.widget.swiperefreshlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:id="@+id/refresh_container"     android:layout_width="match_parent"     android:layout_height="match_parent"     app:layout_behavior="@string/appbar_scrolling_view_behavior" >      <android.support.v4.widget.nestedscrollview         android:id="@+id/container"         android:layout_width="match_parent"         android:layout_height="match_parent"         style="@style/nestedscrollbarstyle" />  </android.support.v4.widget.swiperefreshlayout> 

the other layout have same behavior skips swiperefreshlayout, don't think has impact. note absurdly huge value scrollbarsize in style, same width whether 160 or 1. can change scrollbarstyle, , see changes show up, know it's reading style, have tried changing nestedscrollview straight scrollview no impact, on theory nsv has sv embedded, , perhaps doing override, not sure else look. since part of definition of of element, wouldn't expect able overridden anywhere, other that, width not allowed changed in v4 widget?