using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Shape shape = null;

        var tmp = (long)shape?.Color.First().Name;

        Console.WriteLine();

    }

}

​

​

public class Shape

{

    public List<Color> Color { get; set; }

}

​

public class Color

{

    public string Name { get; set; }

}