A couple years ago I made a private add-on that made bricks have certain properties based on their color as part of a project that was uncompleted. Ex: black bricks wouldn't accept portals, dirty dark green bricks would be deadly water bricks, etc.
I could post it if you really want it. I'm not sure how fully functional it was. I DO, remember, however, that it was meant to work with Trueno's colorset.