diff --git a/doc/md/Plugin-System.md b/doc/md/Plugin-System.md
index cbec04c..9b0d3a7 100644
--- a/doc/md/Plugin-System.md
+++ b/doc/md/Plugin-System.md
@@ -137,6 +137,7 @@ If it's still not working, please [open an issue](https://github.com/shaarli/Sha
 | [render_feed](#render_feed) | Allow to do add tags in RSS and ATOM feeds. |
 | [save_link](#save_link) | Allow to alter the link being saved in the datastore. |
 | [delete_link](#delete_link) | Allow to do an action before a link is deleted from the datastore. |
+| [save_plugin_parameters](#save_plugin_parameters) | Allow to manipulate plugin parameters before they're saved. |
 
 
 
@@ -471,6 +472,22 @@ Allow to execute any action before the link is actually removed from the datasto
 - created
 - updated
 
+
+#### save_plugin_parameters
+
+Triggered when the plugin parameters are saved from the plugin administration page.
+
+Plugins can perform an action every times their settings are updated.
+For example it is used to update the CSS file of the `default_colors` plugins.
+
+##### Data
+
+`$data` input contains the `$_POST` array.
+
+So if the plugin has a parameter called `MYPLUGIN_PARAMETER`,
+the array will contain an entry with `MYPLUGIN_PARAMETER` as a key.
+
+
 ## Guide for template designer
 
 ### Plugin administration
diff --git a/doc/md/Plugins.md b/doc/md/Plugins.md
index 954442e..3e26181 100644
--- a/doc/md/Plugins.md
+++ b/doc/md/Plugins.md
@@ -63,8 +63,12 @@ Usage of each plugin is documented in it's README file:
 
  * `addlink-toolbar`: Adds the addlink input on the linklist page
  * `archiveorg`: For each link, add an Archive.org icon
+ * `default_colors`: Override default theme colors.
+ * `isso`: Let visitor comment your shaares on permalinks with Isso.
  * [`markdown`](https://github.com/shaarli/Shaarli/blob/master/plugins/markdown/README.md): Render shaare description with Markdown syntax.
+ * `piwik`: A plugin that adds Piwik tracking code to Shaarli pages.
  * [`playvideos`](https://github.com/shaarli/Shaarli/blob/master/plugins/playvideos/README.md): Add a button in the toolbar allowing to watch all videos.
+ * `pubsubhubbub`: Enable PubSubHubbub feed publishing
  * `qrcode`: For each link, add a QRCode icon.
  * [`wallabag`](https://github.com/shaarli/Shaarli/blob/master/plugins/wallabag/README.md):  For each link, add a Wallabag icon to save it in your instance.