In this guide, we will explore how to achieve 100% entity brightness (night vision without the green tint) in using only a resource pack—no mods, No OptiFine, and no client-side cheating software.
If pack doesn't work: check these troubleshooting steps
This method works because Minecraft reads a file called lightmap.png to determine how bright each light level should appear. By replacing this file with a fully bright white texture, the game renders all blocks at maximum brightness.