Here’s one way to do it:
* place two copies of the tile object under the cloner and give the second one the luminance texture;
* set the cloner’s Clones method to “Sort” (Object tab);
* assign a plain effector to the cloner, turn all the effector’s parameters off, and set “modify clone” to 100%;
* drag your mograph selection tag into the effector’s Selection box (effector tab).
Example: 8850_lighttiles.c4d.zip