I just upgraded this blog to WordPress 2.5 today and I can't express the extent to which I was disappointed. The new admin theme is a total turn-off and the overall usability experience of WordPress has taken a step backward instead of heading up in a new direction.
I was so much frustrated with the new WordPress 2.5 color scheme that I had to Google in hope for finding a better admin theme plugin and to my surprise, Fluency admin theme was there all along to save me.
Fluency admin theme for WordPress gives your blog admin panel a new look and design that is not the best but is still far more better than the default admin panel theme.

Its hard to imagine what made the WordPress developers include the new admin theme while dumping the old one but I guess its something we should get used to now as this new admin theme is not going to change for long.
Fluency is a dark colored theme that arranges elements of your admin panel in a more organized manner. This also helps you concentrate more on writing as the theme gives your mind a peaceful sensation (which is highly needed while writing a new blog post)
If you have already upgraded to WordPress 2.5 then you should definitely give this admin theme a try. To use this theme simply download, upload to plugins directory and activate it through the plugins manager.
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