17 things that shouldn't be green -- but are! -- on St. Patrick's Day

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St. Patrick's Day brings out the green in all honorary Irishman (and Irishwomen).

And some people take that pretty seriously.

In Chicago, for example, more than 40 pounds of eco-friendly food dye is dumped into the river until it's the perfect shade of emerald green each St. Patrick's Day.

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