+** Color identiifiers mode
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package color-identifiers-mode
+ :ensure t)
+#+END_SRC
+** Font lock face
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (set-face-attribute 'font-lock-keyword-face nil :weight 'bold)
+ (set-face-attribute 'font-lock-builtin-face nil :weight 'bold)
+#+END_SRC