I found this in reference to Autumnglo from a John Hall Q&A. Not sure if it helps or hinders:
Unfortunately, there were about three different shades of Autumnglo produced over the years. The first one, circa '57, was like a Fireglo surrounded by a brown edge. The second, during the late 50's and through into the 60's was more like a very dark Fireglo. The last one, in the 70's, was kind of, for lack of a better description, a baby poop brown with a matte surface. So, while dreaming, take your pick! (My personal preference is the first type.)