Why do they call the mens hockey team black sticks when they don't use black sticks?

Question

Why do they call the mens hockey team black sticks when they don't use black sticks?

Answer 1

They wear black and use sticks.

Answer 2

Because the same reason we call the silver ferns / the all blacks and the all whites...

they carry sticks, and our colours are black & white.

Answer 3

Maybe it's a euphemism for something else...

Answer 4

think outside the box

Answer 5

NZ's rugby union team are the all blacks (they wear all black kit), other teams have black in their nicknames (black ferns, etc.).