You found the perfect name for this game.
It's subtle, but I really like that you can move in 8 directions, while the matching only works vertically and horizontally. How many times did I clear 3 tiles when trying to get to red ones? Nice design. It's simple, but it added some nice complexity to the gameplay.
Level 2 should probably have been a later level. It was the most challenging next to level 5. The puzzles hit the sweet spot for jam games. I used the "r" key a lot, but I managed to get through them all.
The music is adorable. I don't think it fits the game though, since it's pretty cheerful.
Loved the text accompanying each level. Pretty funny. It really adds a lot to the experience. A little smile while I'm scratching my head on the puzzles.
Pedantic note: The tutorial reads "see bottom right" when the available souls are on the left :P