Government No. 1 vs 1A

[Artigas]

I've been a member of this forum for years now but have rarely posted. Life, you know?

My interest in kilts was recently re-ignited concurrently with gaining some better understanding of my family's genealogy.

Reading here, I learned that Grant Hunting is the same as Black Watch, or Government No. 1, due to Grants forming one company of the original Black Watch. It's a fairly ubiquitous tartan, I like the way it looks, and I have a family connection. There were other tartans I could claim a connection to, but I decided to choose this to be my one tartan for my one kilt (having read on this board that it's more common in the highlands to stick with just one family tartan).

With this in mind, I made my way to eBay, where I was pleased to discover several relatively reasonably priced military surplus kilts that fit my measurements. I read on this forum that these kilts are generally well made, if not quite as well made as in decades past. I thought I had hit the jackpot where quality, price, and correct tartan intersect. So I bought one.

Then I hit a snag. While waiting for the kilt to arrive, I did some more reading, and learned that these new kilts, overstock meant for the Royal Regiment of Scotland, are actually in a different tartan than I thought--Government No. 1A. It's the lighter shade of Black Watch previously worn by officers of the Argyll and Sutherland Highlanders, pre-amalgamation.

Tartans bearing the same name, I am reliably informed, often come off the loom in different shades. And 1 and 1A might not actually be all that different--even the names suggest that they are variations on a theme. But I really have no desire to step on anyone's toes or claim colors that I don't have a right to.

I am left to wonder:

1. Can I still wear this tartan with recourse to my Grant roots?
2. If the answer is no, that this tartan is only for the RRS, is there anything I can do to dye it to be darker, like a traditional Black Watch?
3. Or should I just sell the kilt on?