Mo & Maria: Here's a de-waveformed version:
http://little.kylerconway.com/uptime/fedora26-no-wave.png
S.Kemter: The smoke effect turned out to be so washed out it was basically invisible with
the other gradients. I see below you suggest pulling in another waveform as a pattern
background. I'll give that a try.
General note: lot's of wonderful work floating around, everyone!