Flutter Material Color Picker
Material Color picker is a Flutter widget, that can be customizable.
By default, it's Material Colors, but you can define your own colors.
You can also use CircleColor widget to display color in your app. Example, you can set the color picker in a dialog and display the selected color in a ListTile, for settings.
How to use it
These examples use a static color for 'selectedColor', but you can use a variable (state)
Add to your Flutter project
You just need to add 
flutter_material_color_picker as a dependency in your pubspec.yaml file.Import
Basic
Listen main color changes
Disallow Shades
If 
allowShades is set to false then only main colors will be shown and allowed to be selected.onColorChange will not be called, use onMainColorChange instead.Custom colors
In this example, custom colors are a list of Material Colors (class who extend of ColorSwatch).
But you can create your own list of ColorSwatch.
But you can create your own list of ColorSwatch.
Screenshot
Color selection
There is two step, first choose the main color, and when you press it, you have to choose a shade of the main color.
By default it's all Material Colors, but you can define custom colors, a list of ColorSwatch.
By default it's all Material Colors, but you can define custom colors, a list of ColorSwatch.





