He choose no. 737 Black Khaki.
The polish is really dark, it looks mostly like a black polish. Untill it hits the light, then the colours comes shining through. When you buy one, you'd think the polishes would have a lot more colour, because in the bottle it looks a lot more colourfull. If you don't know it's a Black Gloss collection, you might be dissapointed. That being said, if you like dark polishes, you'll probably love these.
It's really hard to capture the colour on a picture. This one was taken in daylight, and as you can see the colour shimmers through. This polish is supposed to be really strong and you should be able to wear it for 7 days. I've worn it for 4 days now and mine has chipped. I have to say my nails are pretty long now and they need to be clipped. Longer nails chip easier and they have only chipped on my indexfingers, so I think this will hold pretty good on normal length nails.
By the way, notice the thin white line on top of my nails? That's all the 'chipping' I usually get, because I don't put on different layers of polish. It has just worn away by typing and working and such.
I think the colours are pretty nice, but as I said before, inside they tend to look like any black nailpolish. So if you're not into those, this might not be a polish for you.