You have (a?) very nice aesthetic :) I especially love how you made a little Gameboy Color for the sprites in the purple theme! Thank you so much for making these themes, they're amazing! :3
Edit: Unfortunately I tested all 3 themes and instead of my 3 characters being next to each other in the character selection screen they are all on top of one another :( I don't know how to fix it, I've tried the updated themes and the ones that weren't updated as well.