Interesting idea and nice music. I would rather change the color with one button that switches back and forth. And the movement feels like I am sliding on the floor, can work for some games not this one. 

I like the music and the general idea.

However, the movement controls seem to lag, especially if you go all the way to the right or left. Another issue is that the row of arrows are sometimes spaced too close (vertically) which makes it impossible to switch color without triggering atleast one.

I hope you keep working on it!

wow this is tough. the shapes/arrows etc fall down the screen so fast. Also due to length of the arrows if I have to change colour quick I always end up changing before the first arrow as gone and dying :(. the concept reminds me of colour switch, If you plan to continue developing this, I'd make all the downward items more consistent in size and shape and definately start them off slow and gradually increase speed as you progress :)

potential here for sure.