Semi-transparent color layer over background-image?

I have a DIV and I would like to put a pattern as background. This pattern is gray. So to make it a little more nice, I would like to put a light transparent color "layer" over. Below is what I tried but which did not work. Is there a way to put the colored layer over the background image?

Here's my CSS:

background: url('../img/bg/diagonalnoise.png');
background-color: rgba(248, 247, 216, 0.7);

I know this is a really old thread, but it shows up at the top in Google, so here's another option.

This one is pure CSS, and doesn't require any extra HTML.

box-shadow: inset 0 0 0 1000px rgba(0,0,0,.2);

There are a surprising number of uses for the box-shadow feature.

Here it is:

.background {
    background:url('../img/bg/diagonalnoise.png');
    position: relative;
}

.layer {
    background-color: rgba(248, 247, 216, 0.7);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

HTML for this:

<div class="background">
    <div class="layer">
    </div>
</div>

Of course you need to define a width and height to the .background class, if there are no other elements inside of it