diff --git a/Doc/html/style.css b/Doc/html/style.css
index acfdd7fd036..b1101ee5610 100644
--- a/Doc/html/style.css
+++ b/Doc/html/style.css
@@ -51,6 +51,9 @@ .newsgroup		{ font-family: avantgarde, sans-serif }
 .url			{ font-family: avantgarde, sans-serif }
 .file			{ font-family: avantgarde, sans-serif }
 
+.tableheader td		{ background-color: #99ccff; }
+.tableheader th		{ background-color: #99ccff; }
+
 .refcount-info          { font-style: italic }
 .refcount-info .value   { font-weight: bold;
                           color: #006600 }