I am unfamiliar with a green borealis. The first time I have seen on is on Lothal in its polar regions. Csilla mainly has purples and blues in the ionospheres. They light the sky at night. Brightly with their color play and spectra. You mainly see them at the equator where it is reasonably warmer than the northern poles. Nevertheless, they are extraordinary. Sky art.

https://embed.music.apple.com/us/album/northern-lights/583175165?i=583175214&app=music&at=11lIDW