Really impressive for having been made in 4 days. I really like the aesthetic of the whole thing.
The red and blue paddles' abilities seem kinda useless to me. I guess they give you a few extra seconds to think, but they don't really help you juggle the balls at all. Also, is there a way to restore health? Maybe once the player gets a certain score or combo, the health should increase. This may already be in the game, and I just didn't notice it.
Well done!