I made a Firefox addon that replaces the styles on Lemmy instances with something more modern. It works with Lemmy 0.17 and 0.18. It supports both light and dark theme.
Addon: https://addons.mozilla.org/firefox/addon/lemmy-modern-ui-theme
Repository: https://github.com/pkrasicki/lemmy-modern-ui-theme-addon
Screenshots
I also released the CSS files - they can be used as a theme on a Lemmy instance. Tell your instance admin to give it a try: https://github.com/pkrasicki/lemmy-modern-ui-theme-addon/releases
Yo this is awesome, gonna try that! Imagine if Lemmy also supported instances to let sublemmies having their own CSS backgrounds…
Suddenly I’m remembering MySpace back in the good ol days when you could do all SORTS of customization to your profile. Now I want a Fediverse version of THAT.
Install userstyles manager (like Stylus) and you are good to go using your own backgrounds and more.
I use this userstyle for Lemmy.