zurb/foundation — pull request #3373 by anitagraham (2013-10-06 04:50:46+00:00)
Title: Move $bg-lightness inside $adjust block. Use variable for $border-color;

These changes allow a user to have a panel background with a gradient.
They need to set the following variables:
$panel-bg: linear-gradient(x,y);
$panel-header-adjust: false;
$panel-border-color: #their-choice-of-colour;