Hubzilla supports themes, which change how Hubzilla looks and works.
As an instance Administrator, you can create or install multiple themes, and make one or more of them available to your instance Users.
As a User, you can select any of the themes that your instance Administrator has made available.
If you are a Developer, you can create your own themes. Unlike some other theming systems, you can change more than the colors and images. You can change the entire HTML structure if you want using our templating system. You can mix and match the default code with your custom code, allowing you to selectively override the default templates. See the Tutorial for creating a derived theme.
A Hubzilla theme itself can contain predefined variants/flavours, called schemes. See AdminLTE and LCARS below for examples of themes containing schemes.
Hubzilla themes have a light and a dark mode. The interface allows to switch between them at any time.
Some Hubzilla themes allow to define parameters on the instance level, which can again be overwritten on the user level. There are hardly any limits for such parameters. Examples of customizable parameters are "default to dark mode"; the background color and the background image (separately for the light and the dark mode); if the background image should be tiled or not; or if a collapsable sidebar should be collapsed or not.
An example for a customized functionality is the HQ tour, which is part of the AdminLTE theme.
Some of the existing Hubzilla themes are listed below. Everybody is invited to develop their own themes. We would be happy to hear from your achievements. A big shout-out goes to @Utsukta Themes, who lead the way in modern Hubzilla theme developping.
Hubzilla Core Themes
These themes are included in the core.
Redbasic
This is the standard Hubzilla theme that is included in every installation.
It is maintained by the Hubzilla Project.
Third-Party Themes
These themes are created by third-parties.
AdminLTE
A simple, elegant and clean theme based on AdminLTE with 9 variants (schemes).
It is maintained by Utsukta Themes.
KeepItSimple
This is a traditional blog layout theme based on KeepItSimple by styleshout.
It is maintained by Utsukta Themes.
LCARS
A Star Strek themed layout with special effects! Adapted from TheLCARS.com
It is maintained by Utsukta Themes.
Spurgeon
This theme is suitable for online magazines, based on Spurgeon by styleshout.
It is maintained by Utsukta Themes.
Typerite
This is a three column layout theme based on Typerite by styleshout.
It is maintained by Utsukta Themes.
Neuhub Tab Theme
Designed to be flexible so that it supports a variety of websites, including content websites, membership websites, and online communities.
It is maintained by Federated Works.
Volse Hubzilla Theme
A light modification of the Redbasic theme that comes with Hubzilla.
It is maintained by Harald Eilertsen.