Hey, great entry here! I think the style and colors works really well, and also a smart choice to go more orange/cyan for certain kinds of color-blindness. I was very surprised to make it to the final boss - and beat it! I'm typically terrible at these types of games but I actually got the hang of the combat fairly quick. Anyway, great entry, really liked the power-ups after each wave and that you could restore health. I suppose my only criticism is that the tie-in to the theme is a bit weak, but hey, sometimes you just have a game idea in mind and go with it!
You can check out my gameplay video playtest below!