Quite a fun puzzle, smooth movement, catchy music!
I like that you went with penguins to reinforce the black/white theme as well.
But what i really liked is the way you introduce mechanics and systems with short/quick tutorial like levels that force you to deal with learning, especially the 2nd level, that helps explain the sun/moon loop
(wasnt sure if its classified as 3 colors with the gray background or if its more because of the transparent buttons / shading in the menu. but benefit of the doubt applies. )