I was thinking about this recently.

I have ws2812b strips in an aluminum track with a defuser under my cabinets and behind the backbox. I have four pins connected to a quinled quad running wled. Each pin is a different segment with specific colors for each machine.

I'd like to tie into a flasher or maybe the action button as a gpio input to trigger effects, either on that specific machine or maybe across all of them. Lots of possibilities!