From Costume of Prelates of the Catholic Church, According to Roman Etiquette (Classic Reprint) by John Abel Felix Prosper Nainfa:
“…the Prelate is reciprocally bound to make his dignity known by wearing the proper costume. Owing to personal sentiments of humility, one may sometimes be opposed to this solemn display; but the example given by great saints like the noble Cardinal St. Charles Borromeo, and the holy Bishop, St. Francis de Sales, who were scrupulously faithful in observing the least prescriptions of the Ceremonials, proves that such humility has no legitimate foundation.”
Psst. Rome. Give us the mass bling whilst you do your Mass thing.