Another fruitful dialogue between Anglo-Catholicism and Confessional Lutheranism:
I think what he means is that archetypally in God, brown exists. And then in time and creation brown expresses itself in a plethora of different instantiations. This then leads to one of the more surprising instantiations, which is chocolate. I suspect he was eating Easter candy and thinking about Neo-Platonism.
My wife thinks he was just writing some wacky jibberish and everyone assumed it was some deep Neo-Platonic something because he’s John Milbank and once there was no secular. But really he’s just eating chocolate and laughing.