diff --git a/config.org b/config.org
index 1c9769e..ba66ab4 100644
--- a/config.org
+++ b/config.org
@@ -52,7 +52,7 @@ The provided default ~config.el~
         solarized-distinct-doc-face t
         solarized-scale-markdown-headlines t
         solarized-scale-org-headlines t)
-  (load-theme 'solarized-selenized-dark t))
+  (load-theme 'solarized-selenized-black t))
 
 ;; This determines the style of line numbers in effect. If set to `nil', line
 ;; numbers are disabled. For relative line numbers, set this to `relative'.
@@ -786,6 +786,12 @@ Provide a live, rendered preview when editing markdown readmes using [[https://g
   :bind (:map markdown-mode-command-map
          ("g" . grip-mode)))
 #+end_src
+** Plantuml mode
+Dial down the indent
+#+begin_src emacs-lisp
+(use-package! plantuml-mode
+  :config (setq plantuml-indent-level 4))
+#+end_src
 * Applications
 Emacs is good for more than just editing text
 ** RSS
diff --git a/packages.el b/packages.el
index 0672a0e..cca7f01 100644
--- a/packages.el
+++ b/packages.el
@@ -72,3 +72,4 @@
   (:host github
    :repo "idris-community/idris2-mode"
    :branch "main"))
+(package! per-buffer-theme)