CSS Color overlay with background image : <p>I am able to set a background image that covers a page but the green overlay does not work. What am I doing wrong? Thank you.</p>

<pre><code>body {
    margin: 0 auto;
    padding: 0;
    background: url("../images/worldmap.jpg") no-repeat rgba(0,255,0,.5);
    /*background-image: url("../images/worldmap.jpg");*/
    /*background-repeat: no-repeat;*/
}
</code></pre>
