update doc

CHANGELOG.md

@@ -9,7 +9,7 @@ CHANGELOG
 * possibility to use a range for the full picture date https://github.com/Psycojoker/prosopopee#full-screen-picture-with-or-without-text-on-it by beudbeud
 * Update material theme by beudbeud
 * social share https://github.com/Psycojoker/prosopopee#share by beudbeud 
-* Define background of section https://github.com/abeudin/prosopopee#background-settings by beudbeud 
+* Define background and text color of section https://github.com/abeudin/prosopopee#background-settings by beudbeud 
 
 0.2 (2016-02-23)
 ----------------

README.md

@@ -428,6 +428,18 @@ or you can use picture
     image: another_picture.jpg
 ```
 
+### Background settings
+
+For text, html and paragraph  section you can define the text color.
+
+Exemple
+
+```yaml
+  - type: bordered-picture
+    color: "#333"
+```
+
+
 ### Example
 
 As a recap, here is how the files of the example gallery are organised: