Resolution was a bit weird in the browser, but otherwise game was working. Art style reminds me of Limbo, which looks very nice.
Gameplay wise it was nice and simple. I did accidently glance at the colour combos on the info page so that got spoiled, but the mechanic itself is cool.
I will say that I feel like the main shooting attack should probably disappear once it hits an enemy in order to give it a bit more impact, since it felt like there was no real feedback when shooting enemies as it went right through them. This depends however if you intent on being able to get collateral hits between multiple enemies.
Great submission overall though!