Livery coloured cockade on bonnet

[Jock Scot]

Several of these fellows seem to be wearing the same pattern in their tweed jackets. Is that a clan pattern also and, excuse my ignorance, is that also traditional and common?

As far as I am aware the tweed is peculiar to Clan Macpherson. I think the story goes and I stand to be corrected, that a member of the Clan had some tweed woven for a jacket and many of the Clan liked it so much that they had a jacket made---by arrangement of course--- out of the tweed too. The only comparison that I can think of, is that members of the Royal family do, sometimes, wear Balmoral Estate tweed kilt jackets. Other estate tweeds could possibly be worn with the kilt by the respective estate owner and staff, but none come to mind at the moment.