Very cool concept. I like the way you combined the poetry with the mood of the game, they work well together. The cool light/hue effect on the title screen is really nice too. I would have liked to have seen the 'space bar to light the room' feature a little earlier as it was more tricky at first as I was trying to figure out how to play. I like the idea of spawning a key when you collect enough colour squares, I didnt get this at first, I thought the progress bar was my life so kept jumping into enemies as I thought I'd survive. Sometimes the enemies spawn on top of the player giving no warning which is frustration perhaps add a sound or short visual effect right before they spawn. Also when the key is spawned you could spawn a door or exit point the player must reach.
Overall I enjoyed the game. Well done.