Why is it that in traditional culture, big red and green are the colors of marriage and black and white are the colors of funerals? Nowadays people have it backwards?

I think it has to do with cultural exchange or something. We see that Chinese wedding attire is mostly red, gold and other colors, symbolizing lively, auspicious and rich, while black and white, because of its simplicity and solemnity, is used for funerals. Western-style wedding occasions relative to our weddings seem serious and solemn, white at the same time symbolize purity, on behalf of their good expectations of the bride (everyone understands that Western sexuality is more open, here means that the bride can not be messed up after the wedding). Modern people because of the acceptance of Western culture is relatively high, so a lot of people are married to Western-style wedding, on the use of black and white. But basically it is still difficult to see the funeral with red, if used, may be the mourners hope to do a red-hot funeral it (dog head to save life)!