Greg Ross

Due to a bug in previous versions (of this plugin, you will need to deactivate, uninstall and then re-install to receive future updates.
Grey color schemes for the admin area of WordPress 3.8.
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<li>
‘A Touch of Blue’ – The Modern Grey theme with a blue hilight for the current selected menu item.
</li>
<li>
‘Classic Grey’ – The Classic Grey colour scheme from WordPress 3.7, a very light grey for menu items and white backgrounds.
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‘Modern Grey’ – The new default color scheme from WordPress 3.8 lightened up!
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‘Post Modern Grey’ – The Modern Grey theme with grey instead of blue buttons.
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</ul>
Special thanks to the translators:
<ul>
<li>Spanish – Andrew Kurtis (www.webhostinghub.com)</li>
</ul>

Grey Admin Color Schemes

Grey color schemes for WordPress 3.8's admin area.

dreamhive

Add a dashboard theme. 
Prepared for a five color scheme. 
To use examples, you can add their own customized color scheme.
<h3>Arbitrary section</h3>
Images and CSS are included in the directory that defines the color scheme too. 
WordPress changed to transparent so that the initial images, I can cope with any color scheme.
<h3>Localization</h3>
Japanese language file has been used only a description.

DH Admin Themes

The DH Admin Themes, WP3.x.x add a theme for the dashboard. You can customize the theme based on the provided sample.

Grey Admin Color Schemes vs DH Admin Themes