I'm an expert
Formerly worldrevolution. The only reason I am nice to anyone else is to avoid being banned.
Apparently 青 can mean "green" and "blue" with the exact same pronunciation (ao). Does Japan have a large % of people that are blue/green colorblind? What's the deal?
Time to get cultured:
http://en.wikipedia.org/wiki/Distinction_of_blue_and_green_in_various_languages