Luckily, I had a little bit (hopefully enough) of thread in my stash already that is the perfect shade of purple, and tan thread blends in well with the pale yellow lining.
I think items are returnable on fabric.com where I ordered this stuff from, but I figure I'll have a use for it sooner or later anyways :)
I'm about a third of the way through making the jacket and don't have the highest of hopes for its outcome at the moment. My first thoughts (before pleating or adding any shape to it) were that the jacket looked a bit institutional (glad I didn't go with white fabric!) But it might turn around in the upcoming steps.
I left off by putting the pleats on one of the sleeves. Things may start looking better... (?)
This is one of those patterns I've been so curious about for so long... I just had to try sewing it. It doesn't really look like something I'd wear, but I still couldn't resist, maybe it is?!