Silicon Valley stars are famous for their intentionally mundane wardrobes.

Tech idols like Mark Zuckerberg to Steve Jobs have created a conviction in tech culture that the more time you spend dressing yourself every morning, the less time you spend changing the world. Even President Obama is sold on the idea. The rigid adherence to a single outfit is the new sign of power.

Tim Cook, however, has tried to carve out his own path as Apple CEO, away from the precise lines of his predecessor, Steve Jobs, when they once dressed very similarly:

But now, compared to Jobs' rigid uniform of black turtlenecks, blue jeans and New Balance sneakers, Tim Cook's clothing is downright flashy.

But by the rest of the world's standards, the Apple CEO sports a pretty narrow range of clothing choices with a penchant for the casual and muted colors — a style best described as his own unique brand of "norm-core."

At Wednesday's Apple event, for instance, Cook's open collared bright blue shirt — tucked in for once — and unpretentious dad jeans cut a stark contrast to the luxury ambience of the products that flitted across the screen behind him. Tim Cook is not a peacock, as viewers could see in this picture of him low-fiving Apple executive Eddy Cue in bright red.

Yet, Cook has accomplished something enviable in his few years as CEO: he radiates power, without dressing like anything special. So for anyone looking to imitate Cook — or maybe in the market for a very obscure Apple-related Halloween costume — here's a quick guide for dressing like the leader of the world's biggest company.

Cook's color choices tend towards darker shades — seldom straying from a set range of light and dark blues, black, and when he's feeling wild, gray.

There may be something to this strategy: Fashion consultants say that blues can inspire confidence in others and, in lighter shades, signals loyalty and friendliness.

Black is apparently a riskier bet in terms of connotation. While there's a certain air of class and sophistication that goes along with it, it's also possible that people will perceive depression or a darker spirit.

Cook is committed to looking approachably rumpled — not for him your precise cuffs. Normally, like most Apple executives he wants his shirt to be loose and free, as if he could curl up on a couch with an iPad at any moment.

An untucked shirt, of course, highlights your choice of pants.

The boring blue jeans most often associated with '90s-era dads are also a staple of Cook's wardrobe. While Cook's choice in denim is a bit hipper than Jobs' unabashedly dad-like stone-washed jeans, there's still a certain plainness to them that befits a "norm-core" look.

Be vigilant. Don't just watch your hems. Make sure your shirt cuffs reflect a devil-may-care genius aspect that show you're too busy and too much in motion to roll them up. Precision in dress is for people with too much time on their hands to manage their looks. People in motion will have clothes in motion.

Tim Cook's subtle style means he can fade into the background. To avoid that, he is often photographed around well-chosen foils: sharp-dressed men who, with leather or lilac-colored shirts, highlight his understated look. It's a risky maneuver, but being comfortable in a subtle outfit around people who have put in an effort is an advanced maneuver - not even Silicon Valley, but very French. Power is ease.

The Apple CEO's image is not complete without his ubiquitous bottle of SmartWater. There's nothing powerful about dehydration.