[FEATURE] Dark Mode

[slooshied]

Hello! I love this app! Thanks for programming it, you're awesome! So much functionality, and reliability over the windows UWP. The only thing I think this app could benefit from is a dark mode! Since many people set their alarms at night, having a white UI tents to stand out on the eyes, especially when all of your other programs are running in dark mode! Haha.
This would be sick!
Best regards.