This is of interest to me since I've set my sights on a kilt in Robertson Hunting Ancient...when you look at the images of the tartan from different mills, there's a lot of difference in terms of how bright or muted they look. Obviously, I'd have to look at actual swatches to get the real color...lots of variation with photography and software and monitors. It does seem, though, that there's some serious variation out there all of the other factors aside. The internet can be a big help but it can also lead to some confusion as well.

I'm sure that there's been variation in the color of the yarn even over the past ten or twenty years...I'm hoping that Matt ventures an opinion...hope that he can steer you in a matching direction. You were wise to get a swatch first, though.

Best

AA