Mod that replaces textures.

I don't know enough to go into great detail, but here's a decent overview of orcs if you're interested. Something reasonably good about elves is described here; in short, it started with Scandinavian myths, and the modern image is also Tolkien, where elves are an immortal primordial race, and an entire chronicle, the Silmarillion, has been written about them. But all of this is completely off-topic and has nothing to do with the texture mod.