diff --git a/www/color.html b/www/color.html
index 85aee65..7d1afcc 100644
--- a/www/color.html
+++ b/www/color.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
+<!DOCTYPE html>
 <html lang="en">
 <head>
   <meta charset="utf-8">