I'm going to wear morning dress for my upcoming afternoon concert - charcoal coat, similar waistcoat, striped gray pants, white shirt and tie. What kind of cufflinks are considered OK for this combo? Also I have heard that toggle/swivel/torpedo back cufflinks are not recommended. Something I don't understand, since I thought that all cufflinks have toggle/swivel/torpedo backs. Also does it matter whether the are silver or gold?