Psychedelic, Brahh!
Really, I was about to X this thing out when all of a sudden, three more Pwong balls appeared on the screen - then five, then ten, then a billion or so. The gameplay (of the original Pong) is rather boring by today's standards, but this kept my attention for longer than I expected courtesy of the tripped-out colors/diffusions and the upbeat Popcorn remix. I believe those were the two critical assets of the game that took from being "good" to "great."
By the way, this looks it was inspired by Plasma Pong. I'm not sure if you know anything about it, but it's a free downloadable and you'd probably enjoy it.
Great Job!