Emacs Themes

[Christopher Dimech]

Have two themes and would like to cycle between the two using
a keybinding.  How can I do it?

Currently I have

(add-to-list 'load-path
   "~/GAdmSw/GungaDin-1.0/el/modus-themes/")

;; Set custom-theme-load-path
(add-to-list 'custom-theme-load-path
   (file-name-as-directory
      "~/GAdmSw/GungaDin-1.0/el/modus-themes/"))

(load-theme 'modus-operandi t t)
(enable-theme 'modus-operandi)

(load-theme 'modus-vivendi t t)
(enable-theme 'modus-vivendi)