Improved scroll bar colors

app/src/main/res/drawable/scroll_thumb.xml

@@ -7,7 +7,7 @@
     </item>
     <item>
         <shape android:shape="rectangle">
-            <solid android:color="?attr/colorPrimary" />
+            <solid android:color="?attr/colorSeparator" />
         </shape>
     </item>
 </selector>

app/src/main/res/drawable/scroll_track.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
     android:shape="rectangle">
-    <solid android:color="?colorSeparator" />
+    <solid android:color="@android:color/transparent" />
 </shape>

app/src/main/res/layout/fragment_messages.xml

@@ -149,10 +149,10 @@
                 android:scrollbarStyle="outsideOverlay"
                 android:scrollbars="none"
                 app:fastScrollEnabled="true"
-                app:fastScrollHorizontalThumbDrawable="@drawable/fast_scroll_thumb"
+                app:fastScrollHorizontalThumbDrawable="@drawable/scroll_thumb"
-                app:fastScrollHorizontalTrackDrawable="@drawable/fast_scroll_track"
+                app:fastScrollHorizontalTrackDrawable="@drawable/scroll_track"
-                app:fastScrollVerticalThumbDrawable="@drawable/fast_scroll_thumb"
+                app:fastScrollVerticalThumbDrawable="@drawable/scroll_thumb"
-                app:fastScrollVerticalTrackDrawable="@drawable/fast_scroll_track"
+                app:fastScrollVerticalTrackDrawable="@drawable/scroll_track"
                 app:layout_constraintBottom_toTopOf="@+id/seekBar"
                 app:layout_constraintEnd_toEndOf="parent"
                 app:layout_constraintStart_toStartOf="parent"

app/src/main/res/values/styles.xml

@@ -35,6 +35,10 @@
         <item name="android:buttonStyleSmall">@style/buttonStyleSmall</item>
         <item name="android:buttonStyleToggle">@style/buttonStyleToggle</item>
         <item name="android:radioButtonStyle">@style/radioButtonStyle</item>
+
+        <item name="android:scrollbarSize">6dp</item>
+        <item name="android:scrollbarThumbVertical">@drawable/scroll_thumb</item>
+        <item name="android:scrollbarTrackVertical">@drawable/scroll_track</item>
     </style>
 
     <style name="AppThemeDark" parent="Base.Theme.AppCompat">
@@ -62,6 +66,10 @@
         <item name="android:buttonStyleSmall">@style/buttonStyleSmall</item>
         <item name="android:buttonStyleToggle">@style/buttonStyleToggle</item>
         <item name="android:radioButtonStyle">@style/radioButtonStyle</item>
+
+        <item name="android:scrollbarSize">6dp</item>
+        <item name="android:scrollbarThumbVertical">@drawable/scroll_thumb</item>
+        <item name="android:scrollbarTrackVertical">@drawable/scroll_track</item>
     </style>
 
     <style name="AppThemeBlack" parent="AppThemeDark">