Add rainbow-delimiters package and setup.

emacs/.emacs.d/emacs.org

@@ -678,6 +678,14 @@ Helpfully inserts matching parens, can be a pita too.
   (use-package smartparens :ensure t)
 #+END_SRC
 
+** rainbow delimiters
+
+Makes matching parens easier.
+
+#+BEGIN_SRC emacs-lisp
+  (use-package rainbow-delimiters :ensure t)
+#+END_SRC
+
 ** uniquify
 
 Make buffer names unique based on their directory and not have <N> or other nonsense.
@@ -812,6 +820,7 @@ Common mode defaults I think are sensible.
            (customize-set-variable 'tab-width 2)
            (flycheck-mode)
            (turn-on-fic-mode)
+           (rainbow-delimiters-mode)
           )
         )
 #+END_SRC