diff --git a/.vimrc b/.vimrc
index a0c6d45..97f4cc3 100644
--- a/.vimrc
+++ b/.vimrc
@@ -25,8 +25,11 @@ Plugin 'mhinz/vim-signify'
 Plugin 'tpope/vim-sensible'
 " Nice colour scheme
 Plugin 'jnurmine/Zenburn.git'
+" Quick file system tree, mapped to Ctrl+n for quick toggle
+Plugin 'scrooloose/nerdtree'
+map <C-n> :NERDTreeToggle<CR>
 
-" == 
+" == Content convenience
 
 " Python autocompletion
 Plugin 'davidhalter/jedi-vim'
diff --git a/bin/iris_color b/bin/iris_color
new file mode 100755
index 0000000..6e52070
--- /dev/null
+++ b/bin/iris_color
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# Make sure only root can run our script
+if [[ $EUID -ne 0 ]]; then
+   echo "This script must be run as root" 1>&2
+   exit 1
+fi
+
+cd /usr/share/themes
+
+if [ ! -d "Iris Dark" ]; then
+    echo "Iris theme not found!"
+    exit 1
+fi
+
+if [ -d "Iris Dark Green" ]; then
+	rm -r "Iris Dark Green"
+fi
+
+cp -a "Iris Dark" "Iris Dark Green"
+cd "Iris Dark Green"
+
+# change orange hilight to green (shade from Faba-Mint)
+find . -type f -print0 | xargs -0 sed -i 's/df253f/79a142/g'