This is the Texture for the Upper Surface of the Tron Suit. Basically I took the basic female avie skin and modified it's shade and slightly shifted it's hue. Very easy to do stuff:

This is the matching Opacity Layer for that Upper Surface. This cuts holes in the Upper Surface to expose the Lower Surface below. Any type of flat, body hugging element can be illuminate in this way. You could have a Lava-Man skin, that showed lava in the stony skin cracks, or have a robotic skin with all sorts of blinking lights:

This is the Texture used for the Lower Surface of the skin. I set it to scroll upwards under the Materal/Animation settings. Even though the body has the same full mapping as the Upper Surface, I didn't need that much detail for this effect, so this thin strip is stretched across the entire width. If I needed more detail in the Lower Surface, for example a Lava-Man, I could have used the full width, which is the same size as the Upper Skin:

There are hundreds of different ways you can alternate between the Upper and Lower Surfaces using Opacity, to make all kinds of effects using this body. Just keep in mind that the arms are held sideways, so vertical movement of a skin will appear to move horizontally on the arms, and vise versa