Font-lock for executable files in emacs dired-mode

I often see the face dired-face-executable in people's .emacs files, but it isn't used in the latest dired sources. So I added the following hook to colorize the filename for executable files:

  (defface ric-dired-executable '((t (:foreground "PaleGreen"))) "Exe files in dired.")
  (defvar  ric-dired-face-executable 'ric-dired-executable)

  (add-hook
   'dired-mode-hook
   '(lambda ()
      (add-to-list 'dired-font-lock-keywords
        (list dired-re-exe
           '(".+" (dired-move-to-filename) nil (0 ric-dired-face-executable))))))