A neat and fun game. Felt a little overwhelming at first, but a more thorough look at the description cleared up a lot about what's all happening. The colour combining mechanic is fun to play around with.
The idea was to have levels introducing new enemies and abilities, but it ended up being introducing enemies in waves and not really clearly explaining the colour change of the bullets. I am glad you had fun with it!
Overscoping comes for us all in the end :') but you managed to make it a nice final product for the jam. You've made it, and that's what it's all about.