I found the closed thread and maybe this is already answered there.
I found several bottles at one store that have Blue and silver/grey wax. The label is standard and doesn't say anything different. Based on the closed thread it could mean that it signifies the Dallas Cowboys. I have been to other liquor stores in the area in the past few months and have never seen it. These were at some local store about 50 miles outside the city, so they could be older bottles.
Any ideas? I can post photos if need be.