We are providing you to change your WordPress admin color. It is fully free. No pro version available , fully free.
This is plugins is very easy to use . After active the plugin , just go to "OT Admin Theme" from the left menu bar of Admin Area
Orbitype is a SEO & Workflow focused external Backend ("WP-ADMIN"). Orbitype combines the tools most commonly used by online entrepreneurs to help them work efficiently and smoothly. Your content will be merged with Google SEO data and provide you with clear statistics for each piece of content on your website.
This plugin gives a beautiful glassmorphic style to the admin interface and to the login page of your WordPress site, allowing to freely customize colors.