// #define DO_NOT_INIT

​

using System;

using System.Drawing;

​

abstract class Vehicle

{

#if DO_NOT_INIT

    protected static Color s_color;

#else

    protected static Color s_color = Color.Green;

#endif

}

​

class Boat : Vehicle

{

    public Boat()

    {

        Console.WriteLine(s_color);

    }

}

public class Program

{

    public static void Main()

    {

        var boat = new Boat();

    }

}