Thank you for your kind comment. A black Selbourne, hmm. Well, I like brown shoes much better than black ones, but black shoes are versatile and I'll probably have to buy other colors of suits as well (for now, I only have one navy suit that I wear four-five times a year). If I need to wear a suit every day then I'll probably need a charcoal suit as well (among others) and one needs black shoes with such a suit, no? So maybe I should follow your advice and go for versatility.
Burgundy is an excellent companion to charcoal, but black is by far the best in my opinion.