Did Town Criers have any specific dress code or uniform?

Yes, Town Criers did have a specific dress code or uniform. They were required to wear a long coat or robe, often in a bright color such as red or blue, with gold or silver buttons. They also wore a hat, usually a tricorne or cocked hat, and carried a bell or horn to announce their presence. They often wore a badge or medallion with the town's crest as well.