face-remap-add-relative not executing

[Christopher Dimech]

I have written this piece, however the colours are not taking effect.

(add-hook 'org-mode-hook
   (lambda ()
      (face-remap-add-relative
         '(org-level-1 ((t (:foreground "00FFFF"))))
         '(org-level-2 ((t (:foreground "chartreuse"))))
         '(org-level-3 ((t (:foreground "dark orange"))))
         '(org-level-4 ((t (:foreground "yellow"))))
         '(org-level-5 ((t (:foreground "magenta"))))
         '(org-level-6 ((t (:foreground "tan1"))))
         '(org-level-7 ((t (:foreground "deep sky blue"))))
         '(org-level-8 ((t (:foreground "orange red")))) )))