A similar paint was discussed here a few years ago. I believe it was developed in Texas.
I stayed in a very old mansion many times that had brass lathing under the thick plaster walls. I suggest everyone should experience this at least once. The whole house was like a huge faraday cage. It was haunted as heck though, so I guess it didn't bother the entities.
Unfortunately tbone, I could not see anything on that site. You must be a member or a subscriber.