Addon: Night Vision Elite
Night Vision Elite provides permanent fullbright-style visibility without potions, commands, or items. The player can light up caves, ancient cities, dungeons, and the Nether instantly, then return to normal lighting with the same control combination.
Author: reefycraft
Quick Toggle

Hold Sneak and Jump at the same time to switch night vision on or off. An action-bar message confirms the new state, showing Night Vision ON in green or Night Vision OFF in red. No menu or special tool is required during play.
Persistent and Clean Effect
Once enabled, the addon continually refreshes the night-vision effect so it does not expire during a long mining session. Potion particles are hidden, keeping the screen clear, and the effect can be disabled immediately whenever natural darkness is preferred.

Exploration
The brighter view makes cave walls, ores, paths, and hazards easier to distinguish in large underground spaces. It also works in the Nether, where long sight lines and dark structures become easier to inspect without filling every area with torches.

Multiplayer
Every player controls the effect independently. One person can keep night vision active while another uses normal lighting, which makes the addon suitable for shared survival worlds, cooperative exploration, building, and PvP practice.

How to install the add-on
Download the .mcaddon or .mcpack file, open it with Minecraft and wait for the import to finish. Then enable the resource and behavior packs in the world settings. If the add-on requires experiments, turn them on before launching the world.