diff --git a/_includes/header.css b/_includes/header.css
index dc90719..b4dd63a 100644
--- a/_includes/header.css
+++ b/_includes/header.css
@@ -5,7 +5,7 @@ header {
   min-height: 9rem;
   padding: 2rem 0;
   backdrop-filter: blur(5px);
-  background-color: rgba(255,255,255,.92);
+  background-color: var(--color-background-header);
   box-shadow: 0 3px 15px hsla(0,0%,39.2%,.12);
 }
 
diff --git a/_includes/page.css b/_includes/page.css
index 796efd3..476ff40 100644
--- a/_includes/page.css
+++ b/_includes/page.css
@@ -8,6 +8,7 @@ body {
   font-family: Aileron, sans-serif;
   line-height: 1.5;
   color: var(--color-text);
+  background-color: var(--color-background-page);
 }
 
 main {
@@ -67,5 +68,7 @@ p {
   --color-text: #495057;
   --color-primary: {{ eseColor }};
   --color-livestream-active: #fff;
+  --color-background-page: #fefefe;
+  --color-background-header: rgba(255,255,255,.92);
 }