How to invert the color of a text layer with a sliding adjustment layer
Make the text only once inside one comp, but duplicate multiple copies of it in your main comp, so you will only need to create the text once.  

Then set one of them to be inverted or whatever other colour setting you want. 

Then make a layer that contains your moving mattes, and add a track matte to each of the text layers, pointing to your moving matte layer.

Mark does indeed look crazy :)