C17LM beat me to the punch with that pic. After I looked at the neckpiece material really, really close, I too am very confident that they are one and the same, just different shades of gray. Therefore, I would recommend to order at least 2-1/2 to 3 yds to make sure you've got enough for the neckpiece. If you've already posted an amount above and you want to up your order, just edit your post as I will not make the official list until after the deadline.