New:
-Added 4 new themes
-Added a "Reload Themes" button in the themes menu
-Modified the prices of all themes (now increments of 1000)
-Decreased the wait time between mystery gift openings (1s → 0.25s)
-Changed the background of elements on screen for better visibility
Fixed:
-The reload button now fixes the issue of missing owned themes at startup
-Improved how the game loads and saves data (may still cause some issues)