Web UI options faff

webassets/js/common.js

@@ -163,11 +163,16 @@ function setColorScheme(mode) {
 
 // Startup function to determine whether to use light or dark mode, or leave as auto
 function usePreferredTheme() {
+    // Set the value of the select box to the server's default
+    $("#color-scheme").val(web_ui_options["default-color-scheme"]);
+
     // Work out if we have ever explicitly saved the value of our select box. If so, we set our colour scheme now based
-    // on that. If not, we let the select retain its default value of "auto".
+    // on that. If not, we let the select retain its default value from Spothole config and apply that.
     let val = localStorage.getItem("#color-scheme:value");
     if (val != null) {
         setColorScheme(JSON.parse(val));
+    } else {
+        setColorSchemeFromUI();
     }
 }