Ive made many Black Watch kilts over the years, the majority four yard box pleated kilts (as that is what I specialize in). The only picture I can come up with at the momement though, it this candid one taken at the Stone Mountain Highland Games a couple of years ago. It shows the kilt from the back. It's a regimental weight tartan, pleated to the line, in this case the black stripe on the green field.