How not to wear brown shoes
Not with black suits
In the large photo the brown shoes are combined with a black outfit and look like stuck on, a foreign body that clashes with the rest of the example in an jarring way. NOT the way to go. Black shoes look so much better and much more elegant and stylish.
In the small photo the combination is right: a black suit - here Black Tie - with black shoes. Thumbs up.
Not with grey or blue suits
Brown shoe generally do not look good with grey or blue suits. See the link here: