World Texture Replacers Edit
Replaces the original morrowind textures with higher detail ones which help create a darker, more foreboding atmosphere. Also includes lighting and weather changes.
Vibrant Morrowind 3.0 By Headlesswonder and Skydye
Makes Morrowind more vibrant and colorful. Huge download, so look at the screenshots and follow the forum thread to make sure it's the right texture replacer for you.
Vivid Morrowind Repaint By Max a.k.a. ~NOBODY~
This mod replaces some of the dull and blurry Morrowind landscape textures with high-resolution, extremely detailed ones, which will hopefully change the atmosphere of a few areas. Although in general this mod works well enough alone, Max recommends mix-n-matching it with a few other similar ones, like the various "Visual Packs". Most, but not all, of the textures originate from photographical material by different authors. A small HTML table is included listing each texture, its size, type, and origin.