diff --git a/extensions/odoo_theme/static/scss/bootstrap_overridden.scss b/extensions/odoo_theme/static/scss/bootstrap_overridden.scss
index 8ba5a965d..7a51b62cd 100644
--- a/extensions/odoo_theme/static/scss/bootstrap_overridden.scss
+++ b/extensions/odoo_theme/static/scss/bootstrap_overridden.scss
@@ -26,7 +26,7 @@ $teal:                                      #017e84;
 $primary:                                   $teal;
 $secondary:                                 $purple;
 $light:                                     $gray-100;
-$dark:                                      $gray-600;
+$dark:                                      $gray-900;
 $success:                                   $green;
 $info:                                      $blue;
 $warning:                                   $orange;
diff --git a/extensions/odoo_theme/static/style.scss b/extensions/odoo_theme/static/style.scss
index 0756e815b..b8b764051 100644
--- a/extensions/odoo_theme/static/style.scss
+++ b/extensions/odoo_theme/static/style.scss
@@ -994,6 +994,8 @@ header {
             &.alert-dark {
                 --o-alert-icon: '#{$i-exercise}';
                 --o-alert-code-border-color: #{tint-color($dark, 50%)};
+
+                background: $gray-300;
             }
         }
         .graphviz {