For what it's worth I agree with Matt and the others on the obvious point about Ireland.

However, much to my astonishment, I was wearing the kilt in London the other week and a middle aged man with an Irish accent, who grew up in Ireland, came up and asked me if I was Irish!! The reason, it transpired, was that the predominant colour in the kilt was green. I am not Irish, and it was not an Irish tartan.

Figure that out!