Back when Drupal 7 was being developed, there was a big inititiative about getting new pretty themes into Drupal core. There were three really good suggestions, one of them being Bartik, which the most people got behind, so it could be finished in time to get into Drupal 7 core. One really good suggestion that couldn't be finished in time was Corolla by Jeff Burnz, which is now a contrib theme. The third suggestion was our theme Busy by eigentor, a theme targeted at corporate websites. Just like Corolla, there wasn't enough time to finish it up for Drupal 7 core. Busy has been a contributed theme ever since, because we didn't want it to get lost only because it didn't make it into Drupal core.

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