I picked up a red kettle that has the Barb-B-Q "Patent Pending" vent cover. I was happy with it until I noticed ripples in the top when the light hits it (similar to what "fish eyes" in paint look like). I figured I had been ripped off, and the lid may have been spray painted. But now I'm not sure. When I look at my 1971 chocolate gas kettle, it looks like it has some ripples in it when the light hits it too, and I'm positive it has not been painted. Anyone have experience with these years? The color of the red is darker than my 1979 red kettle. It looks very uniform. I'm thinking it isn't painted. Please reassure me if you have one.