fltkeep-bottom_sheet.dart

showModalBottomSheet(
  context: context,
  backgroundColor: _noteColor,
  builder: (context) => ChangeNotifierProvider.value(
    value: _note,
    child: Consumer<Note>(
      builder: (_, note, __) => Container(
        color: note.color ?? kDefaultNoteColor, // use the latest picked color
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: <Widget>[
            NoteActions(), // list of available actions: archiving, deletion...
            LinearColorPicker(), // a horizontal color list
          ],
        ),
      ),
    ),
  ),
);