The Jake Group

The plugin adds the option to change the color of the admin bar, as well as 
change the WordPress logo in the admin bar. It can also be used to customize 
the logo on the login screen, and to hide certain dashboard widgets. For 
developers, there are additional features such as a contact widget that can be 
added to the Dashboard. The developer features are only available to users who 
have access to edit their plugin files.

WP-Admin Customizer

Customize certain features and colors of the WordPress admin interface.

Vigorous Hive

This plugin has 2 purposes: 
1. Editing common options for vihvlcc based themes (enable/disable debugger, debugger position) 
2. Include vihvlcc core in wordpress environment, so you can keep an eye on updates using wordpress plugin system
About the lib:
VihvLCC is cross-CMS theming engine based on XSLT. XSLT is fast, well-known and you will make less mistakes while working on views.
WordPress-specific benefits:
<ol>
<li>Same architecture for themes, plugins and widgets.</li>
</ol>
For example if you create 2 themes, then review em, you will see some duplicated features. You might want to move that code to some plugin/widget. With default wp coding style it requires a lot of coding. With VihvLCC you just copy/paste a few files from theme folder to plugin folder with minimal(or no) changes.
<ol>
<li>Some ready-to-use components for wordpress.</li>
</ol>
Other benefits:
<ol>
<li>Components (you can think of em as about widgets) can contain each other, no dept limits.</li>
<li>Each component can be runned as a standalone application</li>
<li>Everything can be tested with unit tests</li>
</ol>

WP-Admin Customizer vs Common options for VihvLCC based themes