Lots of changes and additions to the project. Still early, and not usable.

imports/api/userConfigOptions.js

@@ -0,0 +1,32 @@
+import { Meteor } from 'meteor/meteor';
+import { Mongo } from 'meteor/mongo';
+import { check } from 'meteor/check';
+
+export const UserConfigOptions = new Mongo.Collection('userConfigOptions');
+
+UserConfigOptions.allow({
+    insert: function(userId, doc){
+        // if use id exists, allow insert
+        return !!userId;
+    },
+});
+
+Meteor.methods({
+    'add.darkPref' (darkPref) {
+        check(darkPref, Boolean);
+
+        return UserConfigOptions.insert({
+            darkPref: darkPref,
+            owner: this.userId
+        });
+    },
+    'edit.darkPref' (darkPref) {
+        check(darkPref, Boolean);
+
+        return UserConfigOptions.update({ owner: this.userId }, {
+            $set: {
+                darkPref: darkPref
+            }
+        });
+    },
+});