Show persistent scrollbar in QuillToolbar in flutter web

[akhil-lektik]

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The question

How do I add a persistant ScrollBar or change the colour of existing Scrollbar of QuillToolBar? I tried adding ScrollBar and ScrollbarTheme widgets as parent, but is not working.
ScrollbarTheme( data: const ScrollbarThemeData( thumbVisibility: MaterialStatePropertyAll( true), trackVisibility: MaterialStatePropertyAll( true), interactive: true, thickness: MaterialStatePropertyAll( 10), trackColor: MaterialStatePropertyAll( Color(0xffF4F4F4), ), trackBorderColor: MaterialStatePropertyAll( Color(0xffF4F4F4), ), thumbColor: MaterialStatePropertyAll( Color(0xffB3B3B3), ), ), child: Scrollbar( thumbVisibility: true, trackVisibility: true, child: QuillToolbar( key: key, configurations: QuillToolbarConfigurations( multiRowsDisplay: false,