10 fun facts about Facebook's Mark Zuckerberg

(CNN) -- Tuesday is Facebook CEO Mark
Zuckerberg's birthday. He's 29. If that
seems insanely young for a billionaire,
remember that he co-founded Facebook
when he was a teenager.
Zuckerberg has a lot to celebrate. He's
amassed a fortune, inspired one of every
seven people on the planet to use his
product and changed how the world
communicates -- all before age 30.
By comparison, when they were 29, Steve
Jobs launched the Macintosh computer
and Bill Gates was readying the first retail
version of Microsoft Windows. And most
of the rest of us were just struggling to
pay the rent.
So happy birthday to Zuck! To mark the
occasion, we collected these 10 random
facts about the tech wunderkind:
1. Zuckerberg suffers from red-green
colorblindness and sees the color blue
best, which is why blue dominates
Facebook's color scheme.
2. AOL and Microsoft tried to recruit him
when he was in high school after he
created Synapse, a program that used
artificial intelligence to learn users' music-
listening habits.
3. He wears the same gray Facebook T-
shirt almost every day because he's busy
and it saves him time in the morning.
4. Despite Zuckerberg's casual wardrobe,
he said he wore a tie every day in 2009 to
show that Facebook was serious about
growing in the face of the global
recession.
5. He is a vegetarian and once said he will
only eat meat if he has killed the animal
himself. But among his "likes" on his
Facebook page are McDonalds and In-N-
Out Burger.
6. He has amassed 220,000 Twitter
followers despite the fact that he's only
tweeted 19 times in four years, and not
once in 15 months.
7. In October 2010, Zuckerberg took a
bunch of Facebook staffers to a public
theater to see "The Social Network," the
movie about the founding of Facebook. In
public comments afterward, he criticized
the film's portrayal of him as someone
who invented Facebook to gain social
status.
8. He owns a Hungarian sheepdog named
Beast, who has a Facebook page with 1.5
million fans.
9. He took some heat last year for giving
his wife, Priscilla Chan, a ruby wedding
ring that jewelers valued at about $
25,000 even though he was worth about
$19 billion at the time.
10. If you type @[4:0] in a Facebook
comment window and hit enter, his name
will appear.