diff --git a/themes/quadrant/assets/css/main.css b/themes/quadrant/assets/css/main.css
index b0921dc..f5f18f9 100644
--- a/themes/quadrant/assets/css/main.css
+++ b/themes/quadrant/assets/css/main.css
@@ -52,7 +52,7 @@ footer {
 html {
   color: #FFF;
   font-family: "MC360", sans-serif;
-  background-color: #2d2d2d;
+  background-color: var(--main-bg-color);
   font-size: 14pt;
 }