I am a fan of Kevin Arthur's art for quite a while, they are really expressive and sort of have that Sr Pelo vibes. I've seen him drew game concepts but it is now finally come to life. Kudos my friend.
I really dig the overall feel, the music, the art, the writing, the expressions are spot on energetic and full of humor. The combo and colour switching mechanic takes some time for me to realize but it make the game really fun. I also appreciate the fact that you made bullets that are safe transparent. sadly I did not beat it though because I suck. I would suggest making the bullets a bit bigger though since it is hard to tell them at times, also being able to skip the dialogue is nice.
Overall a huge thumbs up and probably the best entry so far. I will definitely look forward to future games, especially with Kevin Arthur's art.