Thanks for playing my game and for the feedback :)
In terms of design, for example, the colors of the main menu doesn't match with the game color as I designed the menu really early in development with no plans to change it, i just wanted a funtional menu, thats why i used neutral colors (black and white). This saved me time.
Another detail that improve the aesthetic ingame was to add a really gentle purple directional light, which gives a soft mood to the entire scene.
Cheers