diff --git a/docs/source/_templates/layout.html b/docs/source/_templates/layout.html
index 72eaeda4..664d6988 100644
--- a/docs/source/_templates/layout.html
+++ b/docs/source/_templates/layout.html
@@ -1,5 +1,7 @@
 {% extends "!layout.html" %}
 {% block extrahead %}
+    <meta name="theme-color" content="#5c5a55">
+
     <script async defer src="https://buttons.github.io/buttons.js"></script>
     <script async src="https://www.googletagmanager.com/gtag/js?id=UA-84734363-2"></script>
     <script>