Shadowth117's stuff

[Shadowth117]

That's what it is actually Valfor. The textures were designed to be died various colors ingame with the custom character editor. That's also what those flat colored pink and blue textures are for. They're color change maps that you mix with the diffuse texture in the material editor to change its colors. You could just edit the textures themselves as well, but its convenient to be able to change the colors on the fly.

As for .Jpg's having different features, that sounds more like a special shell command for a program more than anything else. With any decent photo editing software like Gimp or Photoshop you could do the same thing.