Toggle transparency mode in emacs / Macos

config.el

;; Transparency mode and toggle

(set-frame-parameter (selected-frame) 'alpha '(85 . 50))

(define-minor-mode transparency-mode
  "Enable Transparency"
  :global t
  (if transparency-mode
   (set-frame-parameter (selected-frame) 'alpha '(85 . 50))
   (set-frame-parameter (selected-frame) 'alpha '(100 . 100))))

(setq transparency-mode t)

(map! :leader
      :desc "Transparency Mode"
      "t t" #'transparency-mode)