Just been watching some rugby down at the local pick up joint

...
Why does the New Zealanders and the Australian have the colours they do? I don't see black or green/yellow in their national flags, please do explain...
I am NOT gonna tell you how long or how many times I had correct myself here.

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JAN
"I´m going back to the front to relax"
"THE BLACK CATS FLIES TONIGHT"
"Find your enemy and shoot him down - everything else is unimportant!"
"When you're out of F-8's... You're out of fighters!"