diff --git a/init.d/programming/common.el b/init.d/programming/common.el
index 4c77033..2f8a949 100644
--- a/init.d/programming/common.el
+++ b/init.d/programming/common.el
@@ -1,6 +1,6 @@
 ;;; common.el --- Common programming settings. -*- lexical-binding: t; -*-
 
-;; Time-stamp: <2020-01-28T03:31:38+0100>
+;; Time-stamp: <2020-01-28T04:47:37+0100>
 
 ;;; Commentary:
 
@@ -265,5 +265,20 @@ year if mode is derived from prog-mode."
   (before-save . my/maybe-copyright-update)
   )
 
+;; Highlights parentheses, brackets or braces according to their depth.
+(use-package rainbow-delimiters
+  :custom
+  (rainbow-delimiters-max-face-count 2)
+
+  :custom-face
+  (rainbow-delimiters-depth-1-face ((t (:inherit rainbow-delimiters-base-face
+                                                 :foreground "LightPink"))))
+  (rainbow-delimiters-depth-2-face ((t (:inherit rainbow-delimiters-base-face
+                                                 :foreground "LightGreen"))))
+
+  :hook
+  (prog-mode . rainbow-delimiters-mode)
+  )
+
 (provide 'programming/common)
 ;;; common.el ends here