by Dr. Greg » Thu Mar 11, 2010 5:31 am
It's not a silly question at all.
The literal translation of cuckold in Chinese is "to wear a green hat." Thus a green hat and, by extension, anything green that is worn by a man are equivalent to pronouncing to the world that his wife is cheating on him. Sending an e-mail to a Chinese man written in a green-colored font could suggest that either he has or will lose his girlfriend or wife to you or perhaps another man.
Related, the color white is associated with funerals in China and the term "yellow movie" (黃色電影) is used to refer to pornographic films, equivalent to what we would refer to in English as a "blue movie."