Add doc for Menu's indices coloring

1 files changed, 12 insertions, 0 deletions

diff --git a/README.md b/README.md
index 0704276..ddae96d 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,18 @@ cli.choose do |menu|
   menu.choice(:ruby) { cli.say("Good choice!") }
   menu.choices(:python, :perl) { cli.say("Not from around here, are you?") }
 end
+
+## Using colored indices on Menus
+
+HighLine::Menu.index_color   = :rgb_77bbff # set default index color
+
+cli.choose do |menu|
+  menu.index_color  = :rgb_999999      # override default color of index
+                                       # you can also use constants like :blue
+  menu.prompt = "Please choose your favorite programming language?  "
+  menu.choice(:ruby) { cli.say("Good choice!") }
+  menu.choices(:python, :perl) { cli.say("Not from around here, are you?") }
+end
 ```
 
 If you want to save some characters, you can inject/import HighLine methods on Kernel by doing the following. Just be sure to avoid name collisions in the top-level namespace.