Who it is for
Freelancers and agencies who build or maintain Joomla sites for clients and want a branded, professional backend and login page, instead of handing every client the same default blue admin. It does this without editing the Atum template or writing CSS, and one purchase covers every site you build.

How it works
Install and enable: it's a system plugin, so there are no template changes and nothing to override.
Pick a brand color: set one color on the Branding tab and save.
Everything follows: the header, sidebar menu, buttons, links, tables, tabs, form controls and the login page all take your brand color, and the text contrast is calculated automatically so labels always stay readable.

What it styles

• One color drives everything: a single brand color recolors the whole backend, including Joomla's own derived palette, so you rarely need more than one setting.
• Automatic text contrast: light surfaces get dark text and dark surfaces get light text, so a light sidebar never leaves you with unreadable labels.
• Branded login page: style the login screen independently with its own background, login box, header and sidebar, or let it inherit your brand automatically.
• Automatic dark mode: by default Joomla's dark mode is left untouched and your brand colors are derived for it automatically. Optional custom dark colors are available when you want full control.
• Local Google Fonts (GDPR): choose a Google Font for headings and body text. The font files are downloaded to your own server once and served locally, so visitors' browsers never contact Google.
• Border radius and shadow presets: round corners and add depth to buttons, inputs, dropdowns and panels with ready-made presets, or enter your own values.
• Logos and backgrounds: replace the favicon and admin logo, add separate collapsed and dark-mode logo variants, and set a background color or image for the main area and sidebar.
• Header and sidebar control: show or hide elements, set the sidebar position and width, and override colors per section without touching the rest.
• Custom CSS and JavaScript: add your own code for the last few percent, scoped per color mode, without editing template files.
• Import and export: save all your settings to a JSON file and restore them on another site in one click, so you can reuse the same look across every project.
• Unlimited installations: one license covers every Joomla site you build or maintain.

Technical details
System plugin for Joomla 5 and 6
Works on the Atum administrator template, or Atum-based child templates
No template override and no core changes; disable the plugin and the backend reverts instantly
Layers on top of Atum using CSS variables
Google Fonts are downloaded once and served locally (GDPR-friendly); the font picker uses a free Google Fonts API key
Settings can be exported and imported as a JSON file
One license, unlimited installations