almost perfect
i would have loved to give you a ten for such fluid gameplay and a really innovative scoring system. and i would have given you a ten, had you included some key features (like an in game menu, or a difficulty setting) or perhaps made it a little less FUCKING FRUSTRATING! a possible solution for the second problem would perhaps be to make different levels, rather than one long gauntlet.
you also might be able to take the color theme a little further: color this spot only red, or make sure this spot stays black. just a thought.
overall, i liked it, but please make it less frustrating.