Quote Originally Posted by OC Richard View Post
It couldn't be that the plaids were old and faded, unless they fade quickly! Because they only started wearing tartan, as far as I know, in 1864 and the latest some of those photos could be is 1869 (due to the doublet style changing).

Perhaps the plaids were a lighter-weight fabric than the trews, and were woven in different colours and/or in different tartans for reasons unknown.
If, as you state, the plaids could have been worn starting in 1864 and the photos were taken as late as 1869, I would think it could reasonably explain some significant fading. Given the dyes used at the time and the fact that these plaids were worn in all manner of weather, plus likely laundered a few times over those years, I would be surprised if they didn't fade. It also may be that the trews were from a different weaver or tartan batch. The two factors combined (age and different sources) are probably both at play.

I really do like the look of those trews in your photo (the man with the feather bonnet) with the straps under the boots. That's a much tidier and tailored look than just a loose trouser bottom, and as someone who rides horses myself I know it would be a great help!