flutter button white background color code example

Example 1: elevated Button Theme background color in flutter

style: ElevatedButton.styleFrom(
              primary: Colors.purple,
            ),

Example 2: add background color to button flutte

bool isButtonPressed = false;

RaisedButton(
            color: isButtonPressed ? Colors.green : Colors.red,
            onPressed: () {
              setState(() {
                isButtonPressed =!isButtonPressed;
              });
            },
          ),