Crystal Leggings (for lighting up caves)

So the new caves are on the way. We need a mining helmet. But not a helmet, something stranger, more fun and interesting.

My idea is Crystal Leggings, these would be purple and white leggings, either crafted from or discovered inside geodes, and would provide the player with the Night Vision effect when the block light level is below 8, so they would only activate when you were in a dark area. They would also apply a less intense version of the Blindness effect, so that the entire cave isn't lit up, just your immediate area.

This would provide some much-needed balance to them so they are not overpowered. Could also be done through a pumpkin-on-head type setup.

Drawbacks could be a partial Slowness effect, or it consuming your XP bar to function, limiting time you can spend wearing it.

So the "Crystal leggings" would be a balanced way to add dynamic caving to the 1.17 update.

Hidden feature:

Leggings would change colour when in range of an active jukebox