I wear a tank in the MacGregor Hunting, aka MacGregor of Cardney, and it incorporates the "maroon" with a very dark green striping in addition to the off-white and wee black. But I have seen, I think, images of the MacGregor Hunting with a much lighter/brighter green in it along with the maroon and other colours.

So I was wondering, can the thread colours vary that much within a named tartan, ie Hunting MacGregor, without becoming an offshoot tartan, eg weathered or ancient? Or maybe there is in fact a difference between Hunting MacGregor and MacGregor of Cardney? Because now that I think about it, the instance of the "Hunting" tartan was actually in the formal outfit of a member of the MacGregors of Cardney...

I would be much obliged for info from persons with intimate knowledge of this subject matter...