The game was good! It felt very TouHou like, it was really hard, I got to the first (or final) boss and couldn't beat it (I'm not good at video games.)
I can't seem to find where the theme was implemented? If I totally missed something you can reply and let me know, but as of now I can't see where the theme is.
Overall this game was good, simple graphics and gameplay. Shame that there wasn't any sound, and I mentioned my thoughts on the theme above. Good job!