diff --git a/README.md b/README.md
index 5a7922e..240dedf 100644
--- a/README.md
+++ b/README.md
@@ -1,22 +1,23 @@
 # todolist-syntax
 
-Vim syntax file for todo lists (**\*.td**).
+Vim syntax file for todo lists (**\*.todo**, **\*.td**).
 
 # Installation
 
 ```shell
 mkdir -p ~/.vim/syntax
 wget -O ~/.vim/syntax/todolist.vim https://raw.githubusercontent.com/gechandesu/todolist-syntax/main/todolist.vim
-echo 'autocmd BufRead,BufNewFile *.td set filetype=todolist' >> ~/.vim/filetype.vim
+echo 'autocmd BufRead,BufNewFile *.todo,*.td set filetype=todolist' >> ~/.vim/filetype.vim
 ```
 
 # Syntax
 
 ```
-- Uncompleted task (blue)
+- Uncompleted task (light blue)
 + Completed task (green)
 x Rejected task (red)
-# Comment (cyan)
-TODO mark
+# Comment
+\Marked text (yellow background)\
+`Code (magenta)`
 Plain text
 ```