Why does the green hue typically dominate the visual experience of the aurora, even when other colors are present?
Answer
The green emission from oxygen at lower altitudes is extremely efficient and easily perceived by the human eye.
Even when the atmosphere creates a mixture of colors, the green emission generated by oxygen at lower altitudes is extremely efficient and readily perceived by the human eye, causing it to overwhelm the observer's vision.

#Videos
What Is an Aurora? - YouTube
Related Questions
What is an aurora fundamentally the visible result of?How is the light we observe as an aurora generated?Which hemisphere features the Aurora Australis?What deflects the vast majority of the incoming solar wind around Earth?What specific solar event can significantly amplify the intensity of particles heading toward Earth?Which gas and altitude combination is responsible for the most common auroral color, green?What color range do nitrogen molecules generally produce when excited?Into which atmospheric layer are charged particles funneled by magnetic field lines to create the aurora?What causes the aurora to appear in dynamic, flowing curtain shapes?Why does the green hue typically dominate the visual experience of the aurora, even when other colors are present?