This image...

[cheat-master30]

Except in some sort of blue for the top part that's currently green, and a different sort of blue for the rest of the image.

True, it's technically for my Drupal main site and not my vBulletin forum, but still:

http://dsultimate.net/themes/acquia_marina/images/preface-wrapper-bg.png

[mandingo]

try this
http://internetdomainnamedotcom.com/image/images/79preface_wrapper_bg.png (http://internetdomainnamedotcom.com/image/view.php?filename=79preface_wrapper_bg.png)

[cheat-master30]

Top part looks great, so maybe a version with the bottom part of the image the same as the original and the top part with the modification you made?

[mandingo]

k.
http://internetdomainnamedotcom.com/image/images/81preface_wrapper_bg.png (http://internetdomainnamedotcom.com/image/view.php?filename=81preface_wrapper_bg.png)

[cheat-master30]

Thank you, and done.