Kingdom Come: Deliverance II

Kingdom Come: Deliverance II

KCDII - Modding
Bohemia is yours to shape – official modding support for Kingdom Come: Deliverance II is now live on Steam workshop! Get ready to create, customise and bring your own vision to life.
Learn More
Trying to modify a texture - texture comes out too bright in game
I did pretty much this:
https://modding.wiki/en/kingdomcomedeliverance2/mod-development/disciplines/3d/tutorial-modifying-textures
The texture shows up modified in-game, but for some reason it is way too bright, something happens during saving with nvidia texture exporter. Does anyone know?