🦊 I respect proton UI and aim to improve it.

A responsive One-Line CSS Theme for Firefox.

🦊 A Userstyle theme for Firefox minimalist and Keyboard centered.

Bringing sexy curves back to Firefox Photon.

Firefox Theme - For dark theme lovers / More compact / Modular / Blur

Firefox CSS Theme/Style for manual customization

A sleek, modern and elegant Firefox CSS theme

Opera GX Skin for Firefox

A mouse-friendly clone of the Cascade custom CSS theme for Firefox.

Make firefox flow like arc

MacOS Big Sur like theme for Firefox on MacOS & Windows. Make your Firefox look like Safari.

A very shy little theme that hides the entire browser interface in the window border

A userChrome.css theme to bring Arc Browser look on Windows to Firefox. Work with Windows, Linux and macOS ✨

This theme for Firefox supports all the window buttons layouts from Tweaks and it blends into the elementary OS user interface.

Custom firefox interface

Firefox theme with Edge like auto-hide vertical tab bar and minimalism design. Powerd by Sidebery.

Vertical tab design for Firefox with dynamic indentation:: Sidebery and TreeStyleTabs (Legacy) themes available!

An add-on that aims to add Vivaldi style toolbar colouring to the Firefox UI

The Firefox theme with too many options.. FF Ultima.

Firefox userChrome CSS theme