Wow, this is brutally hard! I'm not 100% sure if you actually need to move left and right, my most successful runs were those where I stood still, only jumping when red balls approached. With a little tuning of the difficulty, I feel like this could be a fun addictive rhythmic high-score chaser, like Flappy Bird.

I wish there was a little more art, I tend to gravitate towards themed games over purely abstract titles like this. But if you are going for the shapes and colors approach, maybe some extra visual effects would make this really pop.

Nice work! And I wish I had better reflexes, because my few successful attempts were very satisfying!