Update: This plugin does modify your admin layout as well as your color schemes, so please keep this in mind if trying the plugin out. Kaspars has mentioned that there is now an option to disable the layout changes.
What’s even cooler about this plugin is that the plugin provides a nice refresh to the Write Panel and several areas of the overall administration panel.
After activating the plugin, you can change the default
colour schemetheme by viewing your profile options. From there, you have an option of 8 colour schemes, or an option for a custom or random colour.
This is a rather welcome addition to the WordPress 2.5 admin area.
Baltic Amber Themes
Baltic Amber Write Panel
Baltic Amber Settings
Download your own copy of Baltic Amber Admin Themes.