Static also has the quality of lacking scale, and containing spurious signal that your visual cortex tries to lock onto but never can. I always read the neuromancer sky as having that same kind of depthless gray and false motion that I associate with tv snow. A color you can see but can’t rest your eyes on.
Like snow, even. Hence 'Snow Crash'. :)
I imagine the sky in a predominantly cold, snowy or rainy place could look a bit like static. Dry sunny climates are tend to be more "A/V 1" blue. :)