Make theme buttons responsive again

preload/main.py

@@ -180,11 +180,24 @@ class Clock:
     def loop(self):
         colored = False
         button_pressed = False
+        update_counter = 0
+        new_theme = self.theme
         while True:
             try:
-                with display.open() as disp:
+                if update_counter == 0:
+                    update_counter = 10
 
+                    with display.open() as disp:
+                        # update the display
                         self.updateClock(disp)
+
+                        # check theme
+                        if new_theme != self.theme:
+                            self.setTheme(new_theme)
+                            self.writeConfig()
+
+                update_counter = update_counter - 1
+
                 if self.run_once:
                     break
 
@@ -195,16 +208,15 @@ class Clock:
 
                 if not button_pressed and v & buttons.BOTTOM_LEFT != 0:
                     button_pressed = True
-                        self.setTheme(self.theme - 1)
-                        self.writeConfig()
+                    new_theme = self.theme - 1
                 elif not button_pressed and v & buttons.BOTTOM_RIGHT != 0:
                     button_pressed = True
-                        self.setTheme(self.theme + 1)
-                        self.writeConfig()
+                    new_theme = self.theme + 1
 
-                utime.sleep_ms(250)
+                utime.sleep_ms(25)
 
             except OSError:
+                # leds.set(1, (255, 0, 0))
                 pass
 
             except KeyboardInterrupt: