How to change border color of checkbox in flutter / dart

Question

I have a checkbox added to my UI in Flutter app, I can see checkbox color or active color property but can't find any option to change border color of checkbox , which is usually black.

Whats the provision or tweak to change the border color ?

Answer 1

Checkbox(value: false, tristate: false, onChanged: () {}); 　　↓ Theme( data: ThemeData(unselectedWidgetColor: Colors.red), child: Checkbox(value: false, tristate: false, onChanged: (bool value) {}));  No onChanged, then the border will be grey(disabled).