Garland is probably Drupal's most popular theme, so naturally, everyone wants to modify it. But modifying this work of art isn't the most straight forward task to set out on. It incorporates a gradient color effect that, although brilliant, is a pain in the ass get your arms around because of the mechanics of the module that supports the gradient feature.
The following article should get even the most novice Drupal user up to speed on sub-theming Garland in no time.