using System;

public class Program

{

public static void Main()

    {

        var test1 = new Test ();

        var test2 = new Test () {MyFavoriteColor = "Blue"};

        test1.MyFavoriteColor ??= "red";

        test2.MyFavoriteColor ??= "red";

        test1.Dump();

        test2.Dump();

    }

    public class Test

    {

        public string MyFavoriteColor{get;set;}

    }

}