I wonder....?
How fast does a zebra have to run before it looks grey?
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Try "googling" it - they know everything - or least they would probably have some answer. :) -
Your a math whiz and I know you would be able to figure that out better then any one of us. 2 times something divided by pie over something or other = gray. Kind of what I remember from my math class last year; a kind of grayish color. -
There was a half zebra half donkey!