diff --git a/layouts/partials/page-header.html b/layouts/partials/page-header.html
index 3891c45..d4eeee0 100644
--- a/layouts/partials/page-header.html
+++ b/layouts/partials/page-header.html
@@ -2,7 +2,7 @@
 {{ if $featured_image }}
   {{/* Trimming the slash and adding absURL make sure the image works no matter where our site lives */}}
   <header class="cover bg-top" style="background-image: url('{{ $featured_image }}');">
-    <div class="bg-black-60">
+    <div class="{{ .Site.Params.cover_dimming_class | default "bg-black-60" }}">
       {{ partial "site-navigation.html" . }}
       <div class="tc-l pv6 ph3 ph4-ns">
         {{ if not .Params.omit_header_text }}