Yellow and gold lenses are your best friend in low-light conditions on the mountain. They brighten your entire field of view and sharpen definition, making terrain features pop when visibility is poor. Reach for them during night skiing, heavy fog, blizzards, or those flat overcast days where everything blends together.
The catch is that these tints become overwhelming in bright sun. They let so much light through that on a sunny day, your eyes will fatigue quickly and you'll actually see worse, not better. If you primarily ski bluebird days, yellow or gold is the wrong choice.
For skiers who regularly deal with stormy weather or night sessions, yellow or gold lenses are absolutely worth having. A smart approach is keeping them as a swap-in second lens—when the clouds roll in and the light goes flat, swapping to yellow or gold can be the difference between reading the terrain and guessing where the snow ends.