Add dark mode and try to edit meta but failed.

pages/Math429/_meta.js

@@ -1,6 +1,6 @@
 export default {
     index: {
-        display: "hidden"
+        display: 'hidden'
     },
     Math429_L1: "Lecture 1",
     Math429_L2: "Lecture 2",

pages/_meta.js

@@ -15,23 +15,22 @@ export default {
           title: 'Contact Me',
           href: '/contact'
         }
+      },
+      theme:{
+        sidebar: false,
       }
     },
-    Math429: {
-      title: 'Math 429',
-      type: 'page'
+    Math429:{
+      type: 'page',
     },
     Math4111: {
-      title: 'Math 4111',
-      type: 'page'
+      type: 'page',
     },
     CSE442T: {
-      title: 'CSE 442T',
-      type: 'page'
+      type: 'page',
     },
     CSE347: {
-      title: 'CSE347',
-      type: 'page'
+      type: 'page',
     },
     about: {
         display: 'hidden'

theme.config.jsx

@@ -2,6 +2,20 @@ import { useRouter } from 'next/router'
 import { useConfig } from 'nextra-theme-docs'
 
 export default {
+  color: {
+    hue: {
+      dark: 336,
+      light: 164
+    },
+    saturation: {
+      dark: 72,
+      light: 49
+    },
+    lightness: {
+      dark: 59,
+      light: 35
+    }
+  },
   footer: {
     content: (
       <span>
@@ -34,7 +48,7 @@ export default {
   
   logo: (
     <>
-      <svg  width="24" height="24" viewBox="0 0 24 24">
+      <svg  width="32" height="32" viewBox="0 0 16 16">
       <path fillRule="evenodd" d="M1.114 8.063V7.9c1.005-.102 1.497-.615 1.497-1.6V4.503c0-1.094.39-1.538 1.354-1.538h.273V2h-.376C2.25 2 1.49 2.759 1.49 4.352v1.524c0 1.094-.376 1.456-1.49 1.456v1.299c1.114 0 1.49.362 1.49 1.456v1.524c0 1.593.759 2.352 2.372 2.352h.376v-.964h-.273c-.964 0-1.354-.444-1.354-1.538V9.663c0-.984-.492-1.497-1.497-1.6M14.886 7.9v.164c-1.005.103-1.497.616-1.497 1.6v1.798c0 1.094-.39 1.538-1.354 1.538h-.273v.964h.376c1.613 0 2.372-.759 2.372-2.352v-1.524c0-1.094.376-1.456 1.49-1.456v-1.3c-1.114 0-1.49-.362-1.49-1.456V4.352C14.51 2.759 13.75 2 12.138 2h-.376v.964h.273c.964 0 1.354.444 1.354 1.538V6.3c0 .984.492 1.497 1.497 1.6M7.5 11.5V9.207l-1.621 1.621-.707-.707L6.792 8.5H4.5v-1h2.293L5.172 5.879l.707-.707L7.5 6.792V4.5h1v2.293l1.621-1.621.707.707L9.208 7.5H11.5v1H9.207l1.621 1.621-.707.707L8.5 9.208V11.5z"/>
       </svg>
       <span style={{ marginLeft: '.4em', fontWeight: 800 }}>
@@ -51,5 +65,15 @@ export default {
       name: 'Source'
     }
   ],
+  darkMode: true,
+  themeSwitch: {
+    useOptions() {
+      return {
+        light: 'Light',
+        dark: 'Dark',
+        system: 'System'
+      }
+    }
+  },
   docsRepositoryBase: 'https://github.com/Trance-0/NoteNextra/tree/main'
 }