(use-package rainbow-mode
:ensure f
;; add ess to the x major mode
- :init (add-to-list 'rainbow-x-colors-major-mode-list 'ESS[S])
+ :config (add-to-list 'rainbow-x-colors-major-mode-list 'ESS[S])
(add-to-list 'rainbow-x-colors-major-mode-list 'ESS[R])
)
#+END_SRC