diff --git a/css/userChrome-files/navbar.css b/css/userChrome-files/navbar.css
new file mode 100644
index 0000000..7e68104
--- /dev/null
+++ b/css/userChrome-files/navbar.css
@@ -0,0 +1,8 @@
+@-moz-document url-prefix(chrome://) {
+  @media screen and (-moz-os-version:windows-win7) {
+    window {
+      background-color: var(--tone-9)!important;
+      color: var(--in-content-page-color)!important
+    }
+  }
+}
\ No newline at end of file
diff --git a/userChrome.css b/userChrome.css
index 0031971..a6b3631 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -733,6 +733,14 @@ url(chrome://browser/content/places/bookmarkProperties2.xul) {
 .findbar-find-previous:hover {
   background: var(--toolbarbutton-hover-background)!important
 }
+@-moz-document url-prefix(chrome://) {
+  @media screen and (-moz-os-version:windows-win7) {
+    window {
+      background-color: var(--tone-9)!important;
+      color: var(--in-content-page-color)!important
+    }
+  }
+}
 .tab-throbber::before {
   fill: var(--in-content-category-text-selected)!important;
   opacity: 1!important
diff --git a/userChrome_imports.css b/userChrome_imports.css
index d82a0a4..80c6cef 100644
--- a/userChrome_imports.css
+++ b/userChrome_imports.css
@@ -11,6 +11,7 @@
 @import "css/userChrome-files/customization_page.css";
 @import "css/userChrome-files/findbar.css";
 
+@import "css/userChrome-files/navbar.css";
 @import "css/userChrome-files/navbar_menus.css";
 @import "css/userChrome-files/page_info.css";
 @import "css/userChrome-files/remove_bookmarks_bottom_border.css";