Flutter text button with ripple effect and background color

button.dart

TextButton(
      onPressed: onPressed,
      style: ButtonStyle(
        backgroundColor:
            MaterialStateProperty.all(color ?? const Color(0xff4e4c50)),
        // padding: MaterialStateProperty.all(EdgeInsets.zero),
      ),
      child: Container(
        alignment: Alignment.center,
        child: child,
      ),
    );