See also "green cheese". "Green" has metaphorically meant "fresh, new, immature" in English for a long time. I don't think that quote is claiming that it _came

See also "green cheese". "Green" has metaphorically meant "fresh, new, immature" in English for a long time. I don't think that quote is claiming that it _came from_ "green = n00b" but that it shares the same source.