Color of bow tie on hub caps?

[Longhorn Man]

now here's a stick to throw in the spokes...
I have a gray hubcap, blue bow tie. It fits on the lug rim, but is too shallow to go over the full floater hub. It looks just like the 3/4 ton ones above, but not as deep. The gray is kind of like a primer dark gray in color, but shiney.
Someone on here back in 04 or so found one NOS in the box just like it. The P/N came up as 69 only.
Any ideas on what it could have been for?
The only thing I can come up with is the optional 6 lug 16 inch rims. But I don't know if the hub cap retaining nubs were the diameter of a 1/2 ton wheel or a 3/4 ton wheel.
I wish I had a photo but I don't, and the cap is in my garage which is not close to here.