I think it is generally offensive to Western customs, history and culture to wear white or any bright color, like pastels, to a funeral. And I suppose I will stick in the socially-required disclaimer because I am sure somebody will be crafty enough to spend five minutes thinking of an exception to my post ( =D ) about religious wearing potentially brightly colored habits, which is fine.
Western people do not associate brightness and lightness with death, we associate it with positive things like birth, life, and saintliness, especially in the Church. So there is an enormous tradition of wearing dark colors, and usually black, to funerals in the West. This is respectful and in a way keeps the attention on the deceased, which in the context of a Catholic funeral is to pray for him or her. And while it is positive for the soul of a dead person to finally meet Christ, the symbolism of white within the Church points much further than that, namely, canonization.
So I think it is bad to wear white to a funeral. It implies some presumption.
I am fine with violet but I still think black is better for the reason that violet is a penitential color and funerals are not exactly “penitential” events, but there is an element of that.
Whatever happens in non-Western cultures regarding this is their business and I am perfectly content with them doing what fits properly in those cultures for death.
PS I think it would be extremely offensive to wear a gold chasuble to a funeral.