You could still wear them with grey trousers/navy blazer if they are truly "espresso" brown. Also possibly with khaki trousers. Are they open or closed laced brogues? Either way they are more versatile than black captoes IMO.
Hey Noods - I wear a 40/50 and most 42s are just too big. Sadly this winter its the model that's sized up slightly instead... Still there aren't buttons popping off (PoPping off?) or anything. But it could probably use me to lose a kilo or be let out a tad if I could be bothered.