Custom Backgrounds + UI Improvements

[p]This update brings a few new improvements:[/p][p][/p][p]Custom backgrounds: You can now choose an image or video for your background. (Note: video is experimental and may cause crashes)[/p][p]UI improvements: Cleaner main menu, improved color picker, and buttons.
[/p][p] If you run into crashes, bugs, or stability issues, report them here: Feedback Section.[/p][p][/p][p]Please write a review or leave feedback — it helps a lot! 🚀[/p]