I like the game,
the levels are actually nice, I think having the player be part of the black and white world would have worked better instead of the used sprites, but that's just me, the switch colors could make for a lot of good puzzles especially if you add more than just two.
I liked the fakeout at the end level 😂
with more levels and some difficulty curve that game would be really nice,
one final thing to consider is the controls, using just WAD and E makes it hard to move and change colours at the same time, so switching controls to also use arrow keys or adding an extra switch button would be nice,
Good job!