That story, voice acting, and graphics really goes well together. Good job on fulling this atmosphere with only 4 colors.
Puzzle design was great too, it starts off simple and game mechanics are introduced effectively. Level 5 was my favorite, it tries to lure players into wrong solution and clearly shows why that approach doesn't work. Level 10 was a bit of difficulty spike tho, still managed to solve it nonetheless. Adding easier puzzles beforehand would help I guess.
I wouldn't be surprised if this wins the jam. Great job :)