I understand, I'm going to try to apply this function of changing colors while the player is in the air.
It's only been a week since I've been learning how to use Gamemaker so I decided to apply simple mechanics, but as I want to evolve further I'm going to continue working with this project.
Regarding the issue of frustration, it was good that you made me aware of this, I don't have friends who can test the game for me, and as I'm always testing the game and programming, I end up finding it very easy after a while.
That said, thank you very much for the review, I really am learning a lot from comments like yours.