diff --git a/.gitignore b/.gitignore
index ace4b51e9..9e604c19b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -39,6 +39,14 @@ apps/stage-web/public/assets/fonts/
 *.ogg
 *.mp3
 
+# Credentials
+cert*/
+*.pem
+*.crt
+*.cer
+*.key
+*.p12
+
 twitter-session.json
 
 # Make it easy for devenv users to override their local environment.
diff --git a/apps/stage-web/index.html b/apps/stage-web/index.html
index 2c925918b..664af94b5 100644
--- a/apps/stage-web/index.html
+++ b/apps/stage-web/index.html
@@ -8,7 +8,16 @@
     <link rel="icon" type="image/svg+xml" href="/favicon.svg" sizes="any" />
     <link rel="shortcut icon" href="/favicon.ico" />
     <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
+    <meta name="theme-color" content="rgb(18,18,18)" id="themeColor" />
     <meta name="apple-mobile-web-app-title" content="AIRI" />
+    <script>
+      ;(function () {
+        const prefersDark = window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches
+        const setting = localStorage.getItem('vueuse-color-scheme') || 'auto'
+        if (setting === 'light' || (prefersDark && setting !== 'dark'))
+          document.querySelector('#themeColor').setAttribute('content', 'rgb(255,255,255)')
+      })()
+    </script>
     <script>
       ;(function () {
         const prefersDark = window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches
diff --git a/apps/stage-web/package.json b/apps/stage-web/package.json
index 6978b21d3..2201f445f 100644
--- a/apps/stage-web/package.json
+++ b/apps/stage-web/package.json
@@ -50,6 +50,7 @@
     "@xsai/shared-chat": "catalog:",
     "@xsai/stream-text": "catalog:",
     "@xsai/utils-chat": "catalog:",
+    "colorjs.io": "^0.5.2",
     "culori": "^4.0.2",
     "driver.js": "^1.3.6",
     "drizzle-kit": "^0.31.4",
diff --git a/apps/stage-web/src/components/Widgets/AnimatedWave.vue b/apps/stage-web/src/components/Widgets/AnimatedWave.vue
index 2f85699e5..b3b7f5647 100644
--- a/apps/stage-web/src/components/Widgets/AnimatedWave.vue
+++ b/apps/stage-web/src/components/Widgets/AnimatedWave.vue
@@ -103,7 +103,7 @@ watch(
     <slot />
     <div absolute left-0 right-0 top-0 w-full overflow-hidden>
       <div
-        class="wave"
+        class="colored-area wave"
         :style="{
           'background': waveFillColor,
           'height': `${fullHeight}px`,
diff --git a/apps/stage-web/src/pages/index.vue b/apps/stage-web/src/pages/index.vue
index 2e70e7e10..e4682db5a 100644
--- a/apps/stage-web/src/pages/index.vue
+++ b/apps/stage-web/src/pages/index.vue
@@ -1,7 +1,9 @@
 <script setup lang="ts">
+import Color from 'colorjs.io'
+
 import { WidgetStage } from '@proj-airi/stage-ui/components/scenes'
 import { breakpointsTailwind, useBreakpoints, useDark, useMouse } from '@vueuse/core'
-import { ref } from 'vue'
+import { onMounted, ref } from 'vue'
 
 import Cross from '../components/Backgrounds/Cross.vue'
 import Header from '../components/Layouts/Header.vue'
@@ -19,11 +21,26 @@ function handleSettingsOpen(open: boolean) {
 const positionCursor = useMouse()
 const breakpoints = useBreakpoints(breakpointsTailwind)
 const isMobile = breakpoints.smaller('md')
+
+onMounted(() => {
+  if (!('document' in globalThis && globalThis.document != null))
+    return
+  if (!('window' in globalThis && globalThis.window != null))
+    return
+
+  const widgets = document.querySelector('.widgets.top-widgets .colored-area') as HTMLDivElement | undefined
+  if (!widgets)
+    return
+
+  const backgroundColor = window.getComputedStyle(widgets).getPropertyValue('background-color')
+  document.querySelector('meta[name="theme-color"]')?.setAttribute('content', new Color(backgroundColor).to('srgb').toString({ format: 'hex' }))
+})
 </script>
 
 <template>
   <Cross>
     <AnimatedWave
+      class="widgets top-widgets"
       :fill-color="dark
         ? 'oklch(35% calc(var(--chromatic-chroma) * 0.6) var(--chromatic-hue))'
         : 'color-mix(in srgb, oklch(95% calc(var(--chromatic-chroma-50) * 0.5) var(--chromatic-hue)) 80%, oklch(100% 0 360))'"
diff --git a/apps/stage-web/vite.config.ts b/apps/stage-web/vite.config.ts
index df09baac5..b874ddac4 100644
--- a/apps/stage-web/vite.config.ts
+++ b/apps/stage-web/vite.config.ts
@@ -1,3 +1,4 @@
+import { readFileSync } from 'node:fs'
 import { join, resolve } from 'node:path'
 import { env } from 'node:process'
 
@@ -63,6 +64,13 @@ export default defineConfig({
     },
   },
 
+  server: {
+    https: {
+      key: readFileSync(resolve(join(import.meta.dirname, '..', '..', 'localhost.pem'))),
+      cert: readFileSync(resolve(join(import.meta.dirname, '..', '..', 'localhost.crt'))),
+    },
+  },
+
   plugins: [
     Yaml(),
 
@@ -100,7 +108,6 @@ export default defineConfig({
           manifest: {
             name: 'AIRI',
             short_name: 'AIRI',
-            theme_color: '#ffc6cb',
             icons: [
               {
                 purpose: 'maskable',
diff --git a/cspell.config.yaml b/cspell.config.yaml
index 636e6f1aa..8a06711f8 100644
--- a/cspell.config.yaml
+++ b/cspell.config.yaml
@@ -34,6 +34,7 @@ words:
   - cjkfonts
   - clippy
   - collectblock
+  - colorjs
   - composables
   - cooldown
   - coreml
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 9fdfa56c4..855eca8a5 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -670,6 +670,9 @@ importers:
       '@xsai/utils-chat':
         specifier: 'catalog:'
         version: 0.3.0-beta.8
+      colorjs.io:
+        specifier: ^0.5.2
+        version: 0.5.2
       culori:
         specifier: ^4.0.2
         version: 4.0.2
@@ -6557,6 +6560,9 @@ packages:
   colorette@2.0.20:
     resolution: {integrity: sha512-IfEDxwoWIjkeXL1eXcDiow4UbKjhLdq6/EuSVR9GMN7KVH3r9gQ83e73hsz1Nd1T3ijd5xv1wcWRYO+D6kCI2w==}
 
+  colorjs.io@0.5.2:
+    resolution: {integrity: sha512-twmVoizEW7ylZSN32OgKdXRmo1qg+wT5/6C3xu5b9QsWzSFAhHLn2xd8ro0diCsKfCj1RdaTP/nrcW+vAoQPIw==}
+
   combined-stream@1.0.8:
     resolution: {integrity: sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==}
     engines: {node: '>= 0.8'}
@@ -18187,6 +18193,8 @@ snapshots:
 
   colorette@2.0.20: {}
 
+  colorjs.io@0.5.2: {}
+
   combined-stream@1.0.8:
     dependencies:
       delayed-stream: 1.0.0