how to change color of the actual scroll in ScrollView android?

I'm wondering if it's possible to change the color of the ScrollView.

I'm not referring to the background color or the edges.
I attached a print screen of the bar I'm referring. For me, it's kind of transparnt.

Here's how I defined it in the xml:

<ScrollView  
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:fadeScrollbars="false"
    android:layout_toLeftOf="@+id/personalscores_BackButton" 
    android:layout_marginRight="0dp" > 

Create a scroll bar in drawable(scrollbar.xml) using this

<shape android:shape="rectangle"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <gradient
         android:angle="45"
         android:centerColor="#65FF8215"
         android:endColor="#87FD2125"
         android:startColor="#65FF8215" />
    <corners android:radius="20dp" />
</shape>

and add this scroll bar like android:scrollbarThumbVertical="@drawable/scrollbar" to your ListView

OR

put the following attribute to your layout

android:scrollbarThumbVertical="@android:color/white"

OR

create a image and put it in drawable. then add the following property to your layout

android:scrollbarThumbVertical="@drawable/scroll_bar_vertical"

put the following attribute to your layout

android:scrollbarThumbVertical="@android:color/white"

or create a image and put it in drawable. then add the following property to your layout

android:scrollbarThumbVertical="@drawable/scroll_bar_vertical"

Taken from this question:

You can set Listview property as or put the following attribute to your scrollview:

android:scrollbarThumbVertical="@drawable/custom_scroll_style"

Here custom_scroll_style is a xml file under the drawable folder. Lets create the custom_scroll_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="#FF3401"
android:centerColor="#ff5c33"
android:startColor="#FF3401" />

<corners android:radius="8dp" />

</shape>

Try this beautiful custom scrollview

Add following tags in your scrollview

    android:fadeScrollbars="false"
    android:scrollbarStyle="insideInset"
    android:scrollbarThumbVertical="@drawable/scrollview_thumb"
    android:scrollbarTrackVertical="@drawable/vertical_scrollview_track"

Create following drawable in your drawable folder

scrollview_thumb.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">

<solid android:color="@color/common_google_signin_btn_text_light_focused" />
<corners android:radius="15dp" />

</shape>

vertical_scrollview_traack.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">

<solid android:color="#E2E0EB" />
<stroke
    android:width="1dp"
    android:color="#b3a9a9" />
<size android:width="15dp" />
<corners android:radius="15dp" />
</shape>

Output

The question is: "how to change color"

The only correct answer is one! code line in your layout:

android:scrollbarThumbVertical="@android:color/white"

Thats all!

p.s. The question is simple: "color"! and the answer is very simple too. Not a: "how to set custom bar", "how to change bar sizes" or etc. Why so many long answers...