Awesome job with this! The concept is so simple but super fun, surprisingly addictive, and a great fusion of the theme and limitation! If you ever wanted to expand on this game once the game jam is over (and I think you should, because it really is a lot of fun), some possibilities to consider would be adding power-ups (one could turn all bullets onscreen into different colors; one could turn you into a magnet that attracts other colors; one could restore your health; etc.) and, if the player survives long enough, changing the player's color mid-game so they have to adjust on the fly. Great job again! (To your friend Kara as well - the music is awesome!)