I have always been intrigued by CBS Television City. I think it is the greatest television studio to come out of Hollywood, CA. With that said, I have two questions about it:
1) How exactly do they change the studio floor from white to black and back again in each of the studios?
2) CBS Television City began with four different soundstages: 31, 33, 41, 43. 31 and 33 were built with permanent audience seating, but 31\'s was later covered in concrete. When exactly was that?