From fbe3b7b1017344342e7c18673f1432c96e56c9ee Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Mahuet?= <jerome.mahuet@gmail.com>
Date: Sat, 7 Dec 2013 22:39:03 +0100
Subject: [PATCH] README updated

---
 README.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/README.md b/README.md
index c79d511..e9e16e8 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,16 @@ You can manually change the font size by passing in the URL `font_size=12`.
 
 Just pass the `retina=1` in the URL. Your image will be 2 times bigger.
 
+## Transparency
+
+Colors support transparency (0 - 255) by putting the alpha value after the color
+itself. Both colors are supported.
+
+```html
+<img src="http://fakeimg.pl/350x200/ff0000,128/000">
+<img src="http://fakeimg.pl/350x200/ff0000,128/000,10">
+```
+
 ## Set up your own instance
 
 Prerequisites: