color_line_picker
This package helps you to create color palette as horizontal list. Able to detech which color picked and returns it.

Install
1. Depend on it
Add this to your package's pubspec.yaml file:
dependencies:
color_line_picker:: <CurrentVersion>
2. Install it
You can install packages from the command line:
with Flutter:
$ flutter pub get
Alternatively, your editor might support flutter pub get
. Check the docs for your editor to learn more.
3. Import it
Now in your Dart code, you can use:
import 'package:color_line_picker/color_line_picker.dart';
Example
ColorLinePicker(
widgetHeigh: 50,
colorBoxWidth: 50,
colorBoxRadius: 5,
colorBoxPaddingHorizontal: 5,
myIcon: Icons.accessibility,
myIconColor: Colors.black,
onColorSelected: (index) {
setState(() {
_selectedColorIndexTwo = index;
});
},
children: [
Colors.red,
Colors.amber,
Colors.black,
Colors.blue,
Colors.cyan,
Colors.green,
],
),
And you can print like:
Text("Selected color index is: $_selectedColorIndexTwo")