diff --git a/README.md b/README.md
index da03cb2..fd600d3 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,13 @@ If you use a plugin manager you can put the whole directory into your `~/.vim/bu
 To apply customization, apply the variable definitions to your `.vimrc` file.
 
 **Change Character Color**
+
+indentLine will overwrite 'conceal' color with grey by default. If you want to highlight conceal color with your colorscheme, disable by:
+```
+let g:indentLine_setColors = 0
+```
+
+Or you can customize conceal color by: 
 ```
 " Vim
 let g:indentLine_color_term = 239
diff --git a/doc/indentLine.txt b/doc/indentLine.txt
index 03cdf1b..c3709fa 100644
--- a/doc/indentLine.txt
+++ b/doc/indentLine.txt
@@ -30,6 +30,12 @@ g:indentLine_char                               *g:indentLine_char*
                   | ¦ ┆ │
                 Default value is "|".
 
+g:indentLine_setColors                          *g:indentLine_setColors*
+                By default, indentLine will overwrite 'conceal' color.
+                If you want to highlight conceal with your
+                colorscheme, set this value to 0.
+                Default value is 1.
+
 g:indentLine_first_char                         *g:indentLine_first_char*
                 Specify a character to be used as indent line
                 on the first level.