Well... what can I say? It's Pong, a game that was revolutionary for... being a game, and you put a great spin on an old title. I love the music, and the sounds give it a futuristic vibe, which I like. The graphics are pleasing to the eye, the power-ups are fun and balanced, and there's just something about the color of the ball changing with who hit it last that I like. I see only 2 things wrong, which don't even warrant a lowered rating. The first is a problem with the music that's playing. Yeah, I get it, it's royalty free, and it's good to hear the first maybe 9 times, but after a while, that same music starts to feel repetitive and all of a sudden that pumping music that got you ready to play the game is a blade gleaming dully slashing into your ears!
Woah. Didn't realize I felt that strongly about that.
Ahem, as I was saying, my other one is a problem, again, with the music. The music that plays when you get a power-up doesn't layer well at all with the music that's always playing. Either have one or the other. Preferably the power-up music so that we don't have to always listen to that music (besides clicking the mute button, thank you for that btw).
Basically what I'm saying is you did a fantastic job. This will probably net you a high ranking on the top games. Hopefully you keep making games.