Store colors in the collection

One minor tweak to the logic while I was there: an invalid color no
longer invalidates all the rest.

qt/aqt/editor.py

@@ -351,15 +351,11 @@ require("anki/ui").loaded.then(() => require("anki/NoteEditor").instances[0].too
             QShortcut(QKeySequence(keys), self.widget, activated=fn)  # type: ignore
 
     def setupColourPalette(self) -> None:
-        assert self.mw.pm.profile is not None
+        if not (colors := self.mw.col.get_config("customColorPickerPalette")):
-        if custom_colours := str(
+            return
-            self.mw.pm.profile.get("customColorPickerPalette", "")
+        for i, colour in enumerate(colors[: QColorDialog.customCount()]):
-        ):
-            for i, colour in enumerate(
-                custom_colours.split(",")[: QColorDialog.customCount()]
-            ):
             if not QColor.isValidColorName(colour):
-                    break
+                continue
             QColorDialog.setCustomColor(i, QColor.fromString(colour))
 
     def _addFocusCheck(self, fn: Callable) -> Callable:

qt/aqt/mediasrv.py

@@ -600,14 +600,11 @@ def deck_options_ready() -> bytes:
 
 
 def save_custom_colours() -> bytes:
-    colours = ",".join(
+    colors = [
-        [
         QColorDialog.customColor(i).name(QColor.NameFormat.HexArgb)
         for i in range(QColorDialog.customCount())
     ]
-    )
+    aqt.mw.col.set_config("customColorPickerPalette", colors)
-    assert aqt.mw.pm.profile is not None
-    aqt.mw.pm.profile["customColorPickerPalette"] = colours
     return b""