Like the others I'd make a presentation to the Committee but if they say no to the kilt I'd leave it there for the time being. I don't see why there should be any dress code a problem with any kind of kilt for a dressing down Friday but I'd say that on other days a kilt should preferably be a dark self colour of dark tartan to look professional. I chose to wear a black kilt today for Court duty, as I feel that being greeted by a kilted official reassures the public who are often attending Court for the first time and may find it intimidating, but I will probably choose to wear trousers for returning to the court's offices tomorrow to do the paperwork when I will not be meeting the public.