[Boatanchors] National NTS-3 Speaker Question

[whitebear1122 at comcast.net]

Does anyone know what the National NTS-3 Cosmic Blue speaker grill color was
back in the early 1960's? I have a beautiful one, and I'm trying to get a
sense of the original grill cover.  When I look close at it, I tend to see a
gold hue among brown and tan.  I don't know what's original and what's from
old age.  It doesn't have any tobacco smell so I don't think nicotine is
involved with the color hue.  Thanks.  73, Scott WA9WFA