response: I don't know the connection between green and money but its had a long historic tradition of being Ireland's color.
original_response: It definitely contributed to money being green. There is also a long tradition of green being the color of Ireland.
history: My favortie color is green because it makes my eyes pop. I see, did you happen to know it is also a color on the visible spectrum? Specifically between yellow and blue. I used to use blue and yellow paint to make green, so that makes sense Cool, another thing is that animals have used a green hue as their camouflage. Thats pretty cool, like a chameleon? I don't know what a chameleon is but another thing green represented, at least in the Renaissance and Middle Ages, was bankers and merchants. I never knew that.  Is that why money is green?
knowledge: It also has a long historical tradition as the color of Ireland and of Gaelic culture.