If textures from previous file are too dark you can download this pack.
To run this mod we recommend "Mod Starter" which can be downloaded here: Moddb.com
Unpack .zip in main game directory and run mod starter, there will be dungeon mod.
Also you can simply replace files from original by copying dungeon data folder to main directory but it's not recommended.
Enjoy.
so u need Never Heard From Ever Again Game? to play this mod?
Yes.
If no it wouldn't be mod :P