Alright, but just so we're clear on the effect I want to get, "I like to be sure". Objects outside of light will not just be darker, but a whole different color. Silhouette. The reason this is so important, is because a creture in the dark could have a darker body, but white eyes that show clearly. I probably should have mentioned that earlier. :P
Either way thanks for being so helpful.
That is exactly what Color Fusion (Masked) was made for. You select whatever color/darkness you like for the parts that are not lit. The lighting is realized with objects on a layer that are used to cut holes in the non-lit color, giving the impression of lighting that area. For the wolves example you would create a seperate object with just the shape of his eyes and place them on the mask layer and move them together with the wolf. His eyes would show as you created them (or even mix-colored with the eyes on the mask layer), but the rest of the body tinted with the non-lit color.
There might be other methods to achieve this, Color Fusion (Masked) just makes it easier to achieve. So wait for others to show other ways, maybe there is one that serves your purposes better.
And start small, then experiment and learn by doing :)