Thanks a lot for the nice comment and the idea, Yen. I don't find the greenisch light disadvantageous at all. Quite the contrary. (And who said that light has to be always neutral white?)
Still I am glad to try your suggestion. (Attachment.) It looks to me pretty similar to the original, despite the absence of green. I like both versions.
Esta foto esta iluminada con la luz de mercurio de la calle, por alli es mejor en Blanco y Negro para que no tenga ese tono verdoso... gracias por compartir.