My one brown shoe (for what I wear regularly) would be suede (captoe or wingtip, ideally with light brogueing). And having a decent idea of what you wear and what you intend to wear for the next couple of years, I'd say suede would work for you. If I couldn't wear suede, it would be a brogued calf shortwing
That's actually not a bad progression. Black captoes because one day you'll need to bury grandma, brown calf brogues because you're a man of substance, chocolate suede because you're a man of style.