diff --git a/doc/themes/dark.theme b/doc/themes/dark.theme
index a5585d40..ac8465da 100644
--- a/doc/themes/dark.theme
+++ b/doc/themes/dark.theme
@@ -34,7 +34,7 @@ define theme:
     # General UI color.
     exclusion = "gray8 on gray4"
     today     = "rgb521"
-    holiday   = "rgb015"
+    holiday   = "gray4"
     label     = "gray4"
 
   # Rotating Color Palette for tags. The leading zeroes allow the order to be