Here's what I found. I really like the texture and just the hint of color.
Here's how the finished project looks. It was a quick sew, just a hem on each end. Used a tension shower curtain rod to hang it. Oh, and this is fun: there are stacks of pennies sewn into the bottom hem to keep it anchored on the floor.
Since I finished it and put it up a couple hours ago, I've gone into the back hallway to see if I can tell if it's any warmer. When you put your hand on the other side of the curtain, it's definitely colder! So it must be working. Love it when I can actually make something I need!