Barima’s in quite the dandy outfit here. He’s got a loud pocket square, a flower in his lapel that looks as though it may be porcelain, a Mont Blanc pen, a loudly striped shirt and a patterned bow tie. That’s a lot of elements to juggle, but he’s doing it admirably. The color pallette is actually relatively modest - mostly blue and white, with accents of pink and gold. He’s also balancing his very traditional shirt and tie with a coat of very contemporary proportion - narrow lapels, a high gorge and a slim fit.
I also think that Barima’s race gives him a little more leeway to play with the conventions of traditional dress. One’s picture of a man in traditional British business dress tends more towards the father in Mary Poppins than towards a young, good-looking black guy like Barima, and it makes the traditionalism of his outfit feel a little subversive without losing any of its elegance.