Sorry, I am sure this was covered in Fett 101, but I missed that class, and a search is not bringing any joy.
Ok, so I ended up with two tackle twill vest and neckseals, lucky me!!
- Thanks BountyOne :thumbup
Anyway, they are both different colors - one white, the other light grey. The jumpsuit is the darker grey behind the vests.
I began to examine some photos (including Spidey's great OfficialPix shots) to see if I could figure out which vest I should use. As I started to look around it seemed as though the pictures indicated that it was a light grey vest with a white color.
Here is one shot that I found (I know it's ROTJ, but ESB appears to be the same). Did not want to repost SpideyFett's but you can do a search and find those. They show pretty much the same thing too.
Sorry I don't recall whose shot this is, but just say the word and I will remove it if needed.
What is the "official" or approved color of the vest and neck seal for ESB?