[Activity] Aurora Borealis (Northern Lights)

[totally-not-frito-lays]

Is your feature request related to a problem? Please describe.
Lets get some more cool light projects in here! This might be a good follow-up activity to #34

Describe the solution you'd like
A simple northern lights theme might have shifting colors of green, purple, and blue) to mimic the northern lights. It should slowly transition between the different lights with some random variation in length and intensity of each color before it fades into the next one.

Additional context
Add any other context or screenshots about the feature request here.

• Northern Lights Visual Reference