Automatic Background Color different Every Post Blogger

Automatic Background Color different Every Post Blogger - Easy!! Find the code </head> then put the following Javascript code just above the </head>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js?ver=1.5' type='text/javascript'/>
<script type='text/javascript'>
//<![CDATA[
function get_random_color() {
var letters = '0123456789ABCDEF'.split('');
var color = '#';
for (var i = 0; i < 6; i++ ) {
color += letters[Math.round(Math.random() * 14)];
}
return color;
}
$(function() {
$(".post").each(function() {
$(this).css("background-color", get_random_color());
});
});
//]]>
</script>

If you just want to change the color of posts on the main page alone you stay just use conditional tags like the code below:

<b:if cond='data:blog.url == data:blog.homepageUrl'>
<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js?ver=1.5' type='text/javascript'/>
<script type='text/javascript'>
//<![CDATA[
function get_random_color() {
var letters = '0123456789ABCDEF'.split('');
var color = '#';
for (var i = 0; i < 6; i++ ) {
color += letters[Math.round(Math.random() * 14)];
}
return color;
}
$(function() {
$(".post").each(function() {
$(this).css("background-color", get_random_color());
});
});
//]]>
</script>
</b:if>

Display different colors on the background of each posting may be ideal only for Templates with Style Gallery. But there is no harm if you want to try.