Check in patch from bug 287083 (patch by <torben@despammed.com>).

camino/PreferencePanes/Shared/PreferencePaneBase.mm

@@ -98,6 +98,10 @@
     
     returnColor = [NSColor colorWithCalibratedRed:redFloat green:greenFloat blue:blueFloat alpha:1.0f];
   }
+  else
+  {
+    *outSuccess = NO;
+  }
 
   return returnColor;
 }

camino/src/preferences/PreferenceManager.mm

@@ -601,6 +601,10 @@ static void SCProxiesChangedCallback(SCDynamicStoreRef store, CFArrayRef changed
     
     returnColor = [NSColor colorWithCalibratedRed:redFloat green:greenFloat blue:blueFloat alpha:1.0f];
   }
+  else
+  {
+    *outSuccess = NO;
+  }
 
   return returnColor;
 }