Just as fictional finance crook Gordon Gekko had his signature braces and gauche business shirts, and modern finance guys love their company-branded Patagonia fleece vests, so too is Silicon Valley known for its style stereotypes.

The world of tech has long been dressed in nondescript hoodies, jeans, plain T-shirts and logo-free sneakers, a look brought to the small screen in the 2014 HBO show Silicon Valley.