That was an interesting approach to platformer mechanics. The subtle but solvable puzzles are fun to interact with. The art style and the music work well in providing a relaxing experience.
I do not know whether certain areas were relatively darker on purpose but I think it might be important for you to know that the second time I came across the trampoline-mushrooms, I did not see them on the ground until I saw the glowing bit in the trees right above.
Overall, the game is enjoyable. I wish there was more play-time.