Hi

I have added a custom face, but it doesn't work unless I do "M-x 
org-mode-restart".

The custom face:

(defun yant/apply-custom-faces ()
   (add-to-list 'org-font-lock-extra-keywords 
'("(\\([^)]*?[A-Z]+[^)]+?[0-9]\\{3,4\\}[^)]*\\))" . (0 'shadow prepend)) 
'append))

(add-hook 'org-font-lock-set-keywords-hook #'yant/apply-custom-faces)

I have tried saving the desktop manually, but it doesn't take effect, I 
have to reload org-mode each session.

This is my desktop-save config:

  '(desktop-auto-save-timeout nil)
  '(desktop-base-file-name "emacs-desktop")
  '(desktop-file-name-format 'tilde)
  '(desktop-lazy-idle-delay 0)
  '(desktop-load-locked-desktop t)
  '(desktop-missing-file-warning nil)
  '(desktop-path '("~/.emacs.d/"))
  '(desktop-restore-eager t)
  '(desktop-restore-forces-onscreen 'all)
  '(desktop-save nil)

(setq desktop-restore-frames t)
(setq desktop-restore-in-current-display t)
(desktop-read)