static void Main(string[] args)
        {
            Sello.mensaje = "easdsadasd";

            Console.WriteLine(Sello.Imprimir());

            Sello.Borrar();

            Console.WriteLine(Sello.Imprimir());

            Sello.mensaje = "nuevo mensaje";

            Sello.color = ConsoleColor.Red;

            Sello.ImprimirEnColor();

            Console.WriteLine(Sello.Imprimir());

            Console.ReadKey();
        }
 public static void ImprimirEnColor()
 {
     Console.ForegroundColor = color;
     Console.WriteLine(Sello.Imprimir());
     Console.ResetColor();
 }