TexBlend causes my character to become a rainbow

[S4ur0n]

I was playing with Skyrim when I noticed that my character's hand had become almost black. But it appeared that way only in the light at certain angles. So I decided to go into TexBlend and try and fix it. It made it so much worse. Now, the hands blend in with the skin color, that much is true. But my character's skin and all other characters in the game's skins are now a rainbow color.

 

What the hell?

 

How do I fix this? I tried going back and blending again, but the skin color stays the rainbow. My character should not be a living rainbow. What happened and how can I change it back?