Its a interesting concept, but:
1. Make a ball better visible, its hard to see ball in al the mess in middle of game.
2. There is a glitch, where ball gets stuck in paddle if you touch ball with sides of paddle. The easiest fix is to simply paste a "respawn ball" button on screen.
3. Maybe you could add in-game score counter, so you see how many bricks are actually left.
4. I think red/green background is totaly unecesary.
I love the idea of punnishing player by adding bricks rather than loosing a life.