The initial modifications to the Adalight code to incorporate the
FastLED library and work with WS2812B LEDs were done by James Bruce
(@jamesabruce). I can't find a way to do a pull request on a Gist, so
I'm copying his code in full here.
Original Gist: https://gist.github.com/jamesabruce/09d79a56d270ed37870c
David Madison