diff --git a/assets/plugins/_scrollbars.scss b/assets/plugins/_scrollbars.scss
index 0062582..cb0b198 100644
--- a/assets/plugins/_scrollbars.scss
+++ b/assets/plugins/_scrollbars.scss
@@ -22,5 +22,5 @@ body {
 
 // Future
 .book-menu nav {
-  scrollbar-color: transparent var(--gray-500);
+  scrollbar-color: var(--gray-500) transparent;
 }
diff --git a/layouts/_partials/docs/html-head.html b/layouts/_partials/docs/html-head.html
index 0747c40..769ee0f 100644
--- a/layouts/_partials/docs/html-head.html
+++ b/layouts/_partials/docs/html-head.html
@@ -7,7 +7,7 @@ https://github.com/alex-shpak/hugo-book
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <meta name="description" content="{{ or .Description .Summary | plainify | htmlUnescape }}">
 <meta name="theme-color" media="(prefers-color-scheme: light)" content="#ffffff">
-<meta name="theme-color" media="(prefers-color-scheme: dark)" content="#343a40">
+<meta name="theme-color" media="(prefers-color-scheme: dark)" content="#2e3440">
 <meta name="color-scheme" content="light dark">
 
 {{- with .Page.Params.BookHref -}}