For Drupal 4.5 one of our action points was improving the Drupal.org site itself. As well as making information easier to find for users, we wanted to make the site friendlier for people who are new to Drupal. As part of this, a new look was designed for Drupal.org. The style, called Bluebeach, was inspired by the Bluemarine Xtemplate and was designed by me, Steven Wittens.
In order to keep Bluebeach as a unique style for Drupal.org, the theme will not be made available for download.