diff --git a/gas-proxy-setup.md b/gas-proxy-setup.md
new file mode 100644
index 0000000..e69de29
diff --git a/index.html b/index.html
index 8d408fc..77b658f 100644
--- a/index.html
+++ b/index.html
@@ -12,7 +12,9 @@
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     <link rel="icon" type="image/png" href="/logo.png">
     <link rel="apple-touch-icon" href="/logo.png">
-    <meta name="theme-color" content="#0D0D0D">
+    <meta name="color-scheme" content="dark light">
+    <meta name="theme-color" content="#0D0D0D" media="(prefers-color-scheme: dark)">
+    <meta name="theme-color" content="#F9FAFB" media="(prefers-color-scheme: light)">
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     <meta name="apple-mobile-web-app-capable" content="yes">
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