diff --git a/docs/customisation/colors.md b/docs/customisation/colors.md
index cbb1dcb1a..e83b139c1 100644
--- a/docs/customisation/colors.md
+++ b/docs/customisation/colors.md
@@ -27,10 +27,6 @@ html_theme_options = {
         "color-brand-primary": "#7C4DFF",
         "color-brand-content": "#7C4DFF",
     },
-    "dark_css_variables": {
-        "color-brand-primary": "#7C4DFF",
-        "color-brand-content": "#7C4DFF",
-    },
 }
 ```
 ````