diff --git a/Generator/CaptchaGenerator.php b/Generator/CaptchaGenerator.php
index 38b40f5..c923497 100644
--- a/Generator/CaptchaGenerator.php
+++ b/Generator/CaptchaGenerator.php
@@ -22,6 +22,7 @@ class CaptchaGenerator {
public function generate()
{
$i = imagecreatetruecolor(120,40);
+
$col = imagecolorallocate($i, mt_rand(0,110), mt_rand(0,110), mt_rand(0,110));
imagefill($i, 0, 0, 0xFFFFFF);
diff --git a/README.md b/README.md
index 57976ce..67b0534 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,19 @@ You can use the "captcha" type in your forms this way:
Note that the generated image will be embeded in the HTML document, to avoid dealing
with route and subrequests.
+Form theming
+============
+
+If you want to put the image in an other way, you can form theme `captcha_bundle` (this
+is the default behavior) :
+
+```html
+{% block captcha_widget %}
+
+ {{ form_widget(form) }}
+{% endblock %}
+```
+
License
=======
diff --git a/Resources/views/captcha.html.twig b/Resources/views/captcha.html.twig
index 22ebfea..7a44969 100644
--- a/Resources/views/captcha.html.twig
+++ b/Resources/views/captcha.html.twig
@@ -1,4 +1,4 @@
{% block captcha_widget %}
-
+
{{ form_widget(form) }}
{% endblock %}