diff --git a/docs/source/_static/css/custom.css b/docs/source/_static/css/custom.css
index d022c56..d25f911 100644
--- a/docs/source/_static/css/custom.css
+++ b/docs/source/_static/css/custom.css
@@ -48,3 +48,10 @@
     cursor: pointer;
     color: #fff;
 }
+
+
+.ethical-dark-theme .ethical-sidebar {
+    background-color: #50667f;
+    border: 1px solid #a0a0a0;
+    color: #fff !important;
+}