Quote Originally Posted by Ancienne Alliance View Post
The wide white stripe should look great topping a box pleat...

I agree and wish I had some fabric to do a test pinning to be sure, but I'm pretty sure in a box pleat the white stripe would look good.

I'm sure some of our kiltmakers here will chime in with their opinions, but you could always PM some of them and see what they think. I'm sure at least of few of them have made an X Marks kilt or two.