Create a flatbutton for flutter with color green

Container(
  width: double.infinity,
  height: 70,
  child: FlatButton(
    color: Colors.green,
    textColor: Colors.white,
    disabledColor: Colors.grey,
    disabledTextColor: Colors.black,
    padding: EdgeInsets.all(8.0),
    splashColor: Colors.blueAccent,
    onPressed: () {
      /*...*/
    },
    child: Text(
      "Flat Button",
      style: TextStyle(fontSize: 20.0),
    ),
  ),
)