A bunch of contributed themes and configs for the Stylus browser addon.

Stylus is an add-on that lets you load arbitrary bits of user-defined CSS to edit or re-skin websites. Available for both Chrome and Firefox.

A directory of things to make your system look awesome.

Somebody's user.css file for a Shaarli instance.

Sigal is yet another simple static gallery generator. It’s written in Python and it allows to build a static gallery of images. The idea behind Sigal is to ease the use of the javascript libraries like galleria. These libraries do a great job to display the images, Sigal does what is missing: resize images, create thumbnails, generate HTML pages. Doesn't seem to let you put descriptions or comments on your pictures, though. EXIF tag aware. Processes directories of images recursively. Only processes new images unless you tell it not to. In some ways, seems to work like Pelican.

There is a native Arch Linux package, too.

Shaarli plugin to customize the look and feel of the UI with custom CSS rules, sort of like what you can do with Pepperminty.

Futuristic sci-fi and cyberpunk graphical user interface framework for web apps. If you ever wanted to build a theme that looks like JARVIS or something out of Bladerunner, this seems like a good place to start.

Github repo: https://github.com/arwes/arwes

A collection of 40 gift packages with 1884 nice smileys. Free and divided into different cool categories.

Brutstrap is a CSS theme for building a brutalist website: one where the website, as shown in your browser, is an accurate representation of the HTML document it is displaying. Quite literally, the way the HTML is written is the way the page looks.

Source code: https://git.sr.ht/~emsenn/brutstrap

eDEX-UI is a fullscreen desktop application resembling a sci-fi computer interface, heavily inspired from DEX-UI and the TRON Legacy movie effects. It runs the shell of your choice in a real terminal, and displays live information about your system. It was made to be used on large touchscreens but will work nicely on a regular desktop computer or perhaps a tablet PC or one of those funky 360° laptops with touchscreens.

Themeable. Uses Electron. Available as an AppImage.

How to override CSS, develop your own, and install new themes for Shaarli.

Want to design a color scheme for a costume, web site, or presentation? Play around with this a little and see what you can come up with.

Classic Shell is an open source application for Windows 8 that gives you a sane and usable desktop by replacing the Start Menu. It's skinnable, too, so you can make it look like Windows 7, Windows XP, or other versions of Windows.