public static void ImprimirEnColor()
{
Console.ForegroundColor = Sello.color;
Console.WriteLine(Sello.Imprimir());
Console.ForegroundColor = ConsoleColor.Gray;
}
static void Main(string[] args)
{
Sello.mensaje = "asdfasdf";
Console.WriteLine(Sello.Imprimir());//retorna string
Sello.Borrar();
Console.WriteLine(Sello.Imprimir());//retorna string
Sello.mensaje = "nahuel cisa";
Sello.color = ConsoleColor.Red;
Sello.ImprimirEnColor();
Console.WriteLine(Sello.Imprimir());
Console.ReadKey(true);
}