Under the Northern Lights

Midway through, the sky was mostly black, with the aurora running in a flat band. bash134 pitched a fix. Let the lights flow in deep curves, so the sky gains depth. Versions came fast, some pink, some purple. Then godlikepx pushed back. A northern light without green is no northern light at all. bash134 kept reworking until the green came in, with orange easing it into pink. Look up now and the ribbons twist exactly that way.