diff --git a/css/preflight.css b/css/preflight.css
index 170726418..9d9b95722 100644
--- a/css/preflight.css
+++ b/css/preflight.css
@@ -533,7 +533,7 @@ iframe {
 *::after {
   border-width: 0;
   border-style: solid;
-  border-color: config('borderColors.default', black);
+  border-color: config('borderColors.default', currentColor);
 }
 
 textarea { resize: vertical; }