using static System.Console;

using System.Dynamic;

using System.Collections.Generic;

public class Program {

    public static void Main() {

        dynamic obj = new ExpandoObject();

        obj.cor = "verde";

        obj.tamanho = 2000;

        WriteLine(obj.cor);

        WriteLine(obj.tamanho);

        var obj2 = (IDictionary<string,object>)obj;

        WriteLine(obj2["cor"]);

        WriteLine(obj2["tamanho"]);

    }

}