Dojo Digital

This plugin adds a textarea to the Customize page that allows theme editors to write, preview, and implement CSS code in real time. 
It also includes a frontend CSS editor window with live preview capability.

Live CSS Preview

Live front-end and Customizer CSS editing powered by native WordPress Additional CSS storage.

Afzal Multani

Bhavesh Khadodara

WP Logo Changer – provides multiple features to Customize Admin Panel that you don’t have in wordpress by default. General Tab is for customizing Login Page mostly and Advanced tab is for customizing Admin Panel colors.
<ul>
<li>Change Login page logo</li>
<li>Set Login Page Background Color</li>
<li>Set Login Page Background Image</li>
<li>Change Login Page Form Background Color</li>
<li>Change Login Page Form Field Background Color</li>
<li>Change Login Page Form Text Color</li>
<li>Change Welcome Message</li>
<li>Change Footer Text</li>
<li>Hide WordPress Logo on Dashboard</li>
<li>Hide Admin Bar on Front End</li>
<li>Change Navigation Background Color</li>
<li>Change Navigation Font Color</li>
<li>Change Navigation Font Hover Color</li>
<li>Change Navigation Hover Background Color</li>
<li>Change Sub Navigation Background Color</li>
<li>Change Sub Navigation Font Color</li>
<li>Change Icons Color</li>
</ul>

WP Logo Changer

Awesome work guys..!!!!

Fabulas work guys best of luck :)

WP Logo Changer - Admin Panel provides multiple features to Customize Admin Panel that you don't have in wordpress by default.

Live CSS Preview vs WP Logo Changer