[H1N1]

Or boat shoes. Classic brown boat shoes in good leather, relatively inexpensive ones by Chatham or someone like that. White trousers are a classic naval/maritime look, and are still worn in high end yacht clubs around the world. Good style, and looking 'cool', is in part looking appropriate, and looking like you understand the origins of what you are wearing. This is the main reason it looks ridiculous when 'fashionable' people butcher traditional clothing (wearing braces without a shirt and jacket, rolling up your suit sleeves, wearing a suit jacket and a tshirt, having your suit jacket tailored too short as is the modern horrific fashion etc etc).

This is what a great many people who are very 'fashionable' fail to understand about real style. Real style is taking classic looks, and adding very subtle personal quirks to them, just enough to hint at a personality. It can be as simple as adding a hint of colour to the stripe on your suit, or picking an unusual and colourful tie against a beautifully tailored dark grey suit/white shirt combo. When I wear white trousers, I generally wear a navy (no accident) or pale blue shirt, and a navy jacket. I then have a selection of handkerchiefs which all have anchors on them, some white and navy, some red and white etc. You might also pair it with a maritime watch.

I do think the coloured deck shoes, loafers, and blue suede shoes are all good choices too.