diff --git a/html.nanorc b/html.nanorc
index 18c4763..32d47d4 100644
--- a/html.nanorc
+++ b/html.nanorc
@@ -4,4 +4,5 @@ syntax "HTML" "\.htm[l]?$"
 color brightblue start="<" end=">"
 color red "&[^;[[:space:]]]*;"
 color yellow ""[^"]*"|qq\|.*\|"
-color red "(alt|bgcolor|height|href|label|longdesc|name|onclick|onfocus|onload|onmouseover|size|span|src|style|target|type|value|width)="
+color red "(action|alt|bgcolor|height|href|id|label|longdesc|method|name|onclick|onfocus|onload|onmouseover|rel|size|span|src|style|target|title|type|value|width)="
+color magenta start="<!--" end="-->"