No, this topic has nothing to do with the existence of a Universe or Multiverse, so if you were looking for something like that ... Begone!
Everything I will say is rhetorical. All of these are "what ifs". And this topic probably makes no sense and is pointless. But still.
So, the question of this topic is: What would it be like outside of the Universe. What colors (if any)? Would there be light? Or would it be like trying to explain what yellow is to a person who has always been blind?
Please nobody post something like "you can't get outside of the Universe, so hah!" For this purpose I will assume we can.
