Is white at a funeral okay?

There is such a thing as a (White funeral) the best known historical example was that of Queen Wilhelmina of the Netherlands, who died in l962. Not only the deceased, but most of the front-line mourners were clothed in white. White signifies purity of soul, Peace ( a dove is a white pigeon) and so on. One should be advised Wilhelmina was a Queen, and well Rank hath its privileges.