diff --git a/packages/codemirror/themes.mjs b/packages/codemirror/themes.mjs
index 71fb7642..ee3e05bf 100644
--- a/packages/codemirror/themes.mjs
+++ b/packages/codemirror/themes.mjs
@@ -484,11 +484,16 @@ export function injectStyle(rule) {
   return () => styleSheet.deleteRule(ruleIndex);
 }
 
-let currentTheme, resetThemeStyle, themeStyle;
+let currentTheme,
+  resetThemeStyle,
+  themeStyle,
+  styleID = 'strudel-theme-vars';
 export function initTheme(theme) {
-  themeStyle = document.createElement('style');
-  themeStyle.id = 'strudel-theme';
-  document.head.append(themeStyle);
+  if (!document.getElementById(styleID)) {
+    themeStyle = document.createElement('style');
+    themeStyle.id = styleID;
+    document.head.append(themeStyle);
+  }
   activateTheme(theme);
 }
 
@@ -496,6 +501,7 @@ export function activateTheme(name) {
   if (currentTheme === name) {
     return;
   }
+  currentTheme = name;
   if (!settings[name]) {
     console.warn('theme', name, 'has no settings.. defaulting to strudelTheme settings');
   }
diff --git a/website/src/docs/MicroRepl.jsx b/website/src/docs/MicroRepl.jsx
index a9673142..c0e34637 100644
--- a/website/src/docs/MicroRepl.jsx
+++ b/website/src/docs/MicroRepl.jsx
@@ -54,6 +54,7 @@ export function MicroRepl({ code, hideHeader = false }) {
       <div className="overflow-auto relative">
         <strudel-editor
           is-line-numbers-displayed="0"
+          is-active-line-highlighted="0"
           code={code}
           ref={(el) => {
             if (wc.current) {