Dominick, it IS white, the tub on the bottom. I don't want to change it though because he has already developed the habit of pooping right beside it after handling where I put newspapers. Perhaps I can put something INSIDE the tub?

The top bowl I won't change. I can slowly inch it away but I have no idea how I would inch it once I get to the edge of the platform because then I would have to either move it a full foot down to the next platform or leave it where it is. I can't put the bowl on the slanted climbing grids.