The following snippet of code will automatically switch between themes if OSX is using light or dark mode.
M-x match-emacs-theme-to-system. Replace
'light-theme with appropriate theme names.
(defun match-emacs-theme-to-system () "Automatically set the theme to match if OSX is in dark mode." (interactive) (if (system-dark-mode-enabled-p) (load-theme 'dark-theme t) (load-theme 'light-theme t))) (defun system-dark-mode-enabled-p () "Check if dark mode is currently enabled on OSX." (if (string= system-type "darwin") (string= (shell-command-to-string "printf %s \"$( osascript -e \'tell application \"System Events\" to tell appearance preferences to return dark mode\' )\"") "true") nil)) (match-emacs-theme-to-system)