Grab a header graphic and set it in a new canvas larger than the header itself so if the size of your header is 700x100px, set the size of the canvas to atleast 800x200px. Make sure the header is in a new layer and not merged with the background.
Step two:
Add the following layer styles.
Blend Mode: Color Burn
Opacity: 63
Noise: 0
Color: #000000