I see that WP.org has now been brought in line with the desaturated, silvery grey look of the WP 3.0 admin. While I don't mind the changes to the WP 3.0 admin interface so much, I do think it is an error to do away with the fresh colour scheme of WP.org. The grey looks bland and unattractive; not good for fresh open source software that has just released a new version with loads of beautiful new features.
The most important thing to realize is that the WP Dashboard serves radically different goals than the WordPress.org 'storefront'. I think it is a mistake to use the same colour scheme for both. Imagine mozilla.com (champion of fresh and professional FOSS looks) being styled with the colours of the Firefox or Thunderbird user interface!