No the premise is quite cool especially when the rainbow appeared! But it might not very intuitive - seems like you're hunting down the light particles rather than the rays left behind? I was trying to get to the rays for a while and realized that didn't do much. Also it seemed kind of hard to hit the rays accurately so I thought I was doing something wrong, and realized I had to follow the particles moving about instead. Would be cool to see what colors I am missing too.