Michal Katuščák

This plugin will simplify your administration.
Options:
<ul>
<li>General
<ul>
<li>White theme</li>
</ul>
</li>
<li>Dashboard
<ul>
<li>Hide Welcome panel</li>
<li>Hide default boxes</li>
<li>Add box with your logo and title </li>
</ul>
</li>
<li>Admin panel
<ul>
<li>Remove WordPress logo</li>
<li>Remove comments information</li>
</ul>
</li>
</ul>

Light Admin Theme

This plugin will simplify your administration.

Frenchtastic

This plugin allows you to give your WordPress dashboard a fresh new look. Your admin panel will look clean and will allow you to focus on what’s really important for you and your users. This colours scheme is set as default and the plugin also prevents users from changing it.

Coeur Admin Color Scheme

This plugin allows you to give your Wordpress dashboard a fresh new look.

Light Admin Theme vs Coeur Admin Color Scheme