How about "the Bonnie Green ________________". You choose the last word. It could be comical, filling in with an object that isn't normally green except that you're Irish. It could be serious, as you could choose something that is representative of Irish national pride.

Or as the title of the song about Napolean, you could call yourselves "the Bonnie Bunch of Roses" and all dress up like the little General. I know, it's pretty far fetched, but that's the way I think; eccentric and obtuse.

Margarita