diff --git a/src/rnb.erb b/src/rnb.erb
index 98570bd..69adb1a 100644
--- a/src/rnb.erb
+++ b/src/rnb.erb
@@ -32,12 +32,13 @@
     # Step 2: colors
     #
     # black = [       give each color a distinctive name
-    #   "#000000",    hexadecimal color used in GVim/MacVim
+    #   "#000000",    hexadecimal color used in GVim/MacVim or "NONE"
     #   0,            integer between 0 and 255 used by terminals supporting 256 colors
+    #                 or "NONE"
     #   "black"       color name used by less capable color terminals, can be "darkred",
     #                 "red", "darkgreen", "green", "darkyellow", "yellow", "darkblue",
     #                 "blue", "darkmagenta", "magenta", "black", "darkgrey", "grey",
-    #                 "white"
+    #                 "white", or "NONE"
     # ]
     #
     # If your colors are defined correctly, the resulting colorscheme is guaranteed
@@ -310,4 +311,4 @@ let g:terminal_ansi_colors = [
         \ ]
 <% end -%>
 
-" Generated with RNB (https://gist.github.com/romainl/5cd2f4ec222805f49eca)
+" Generated with RNB (https://github.com/romainl/vim-rnb)