Night Vision Function for the Spyglass (Amethyst Lens)

It would be very interesting to see a new function for the Spyglass: the ability to see better in the darkness of caves. For example, when using the Spyglass in a dark area, it could apply a light purple filter—similar to a Night Vision effect—while maintaining the classic circular vignette.

This makes perfect sense since the lens is crafted from Amethyst Shards, which are purple. This feature would make the item essential for cave exploration, allowing players to scout from a distance and spot mob silhouettes before moving in.

In well-lit areas, the Spyglass would function with normal colors, while the "purple night vision" would only kick in within dark environments. This would make the item much more popular and vital for those who want to explore deep underground or plan their approach strategically, increasing immersion and adding a tactical layer to the gameplay.