I like to go deep into history. The first impression was when I looked at the photo - these guys look like Ukrainian Cossacks. There are some similarities.
The history of your country and your city is very rich. There were many interesting events and incidents that affected the appearance of modern Zagreb.
I had never wondered where the tie came from. Although I learned about it a couple of years ago. We are all used to seeing a tie on "business" men. It is an association of business style and to some degree of success.
For example, presidents during the debate or bluntly pick up the color of a tie on the situation. If he makes an important speech - then the color of the tie should meet the importance. If he speaks at a debate and needs to look reserved and mediocre, then usually it's blue or its shades.
The tie is a very important element of the costume.
I liked your message
Have a nice day