Generally green is associated with health, prosperity, and harmony. Green is also the color of jade. Separately, green hats are associated with infidelity and used as an idiom for a cuckold. This has caused uneasiness for Chinese Catholic bishops, who in ecclesiastical heraldry would normally have a green hat above their arms. Chinese bishops have compromised by using a violet hat for their coat of arms. Sometimes this hat will have an indigo feather to further display their disdain for the color green.
what does the color green mean in chinese culture
health prosperity harmony green hats are associated with infidelity