Ember

A dark, glassy blur Firefox theme with an ember accent, one line toolbar, and "zen" that hides the entire UI until you need it. Requires dark mode turned on.

Zen mode: everything collapses to a 3px peek strip. The colored lines is the active tab. Non active tabs are silver

Hover the top edge (or hit Ctrl+L) and the full toolbar appears.

Layout

• One line UI: urlbar and tabs share a single row; the urlbar expands smoothly on focus
• Zen (--uc-zen: 1): the whole toolbar collapses to a thin strip; reveals on hover, focus, or urlbar activation. Tab positions stay visible as a thin line, with the active tab being orange and the inactive is a dark silver/grey.
• Bookmarks toolbar moved below the tab/nav row
• Sidebar headers and splitter chrome stripped; supports both horizontal and vertical tabs
• Floating findbar pinned top-right, with configurable button order/visibility
• macOS traffic-light handling included

Styling

• Frosted-glass panels, menus, and findbar (backdrop-filter blur + saturation, tunable alpha/blur)
• Warm dark palette: near-black base #0b0908, rust accent #a63a2e, parchment text #d8cfc0
• Hover/active states use color shifts instead of background pills — no boxy hover squares
• Animated per-tab loading progress bar (toggleable)
• Square corners by default; radius is variable-driven if you want rounding back
• Respects prefers-reduced-motion

Content
(userContent.css)

• Themed about:home / about:newtab replaces the firefox logo and text with just a image of rick and morty, minimal search field, monospace labels, transparent tiles
• Glass treatment across about:preferences, about:addons, about:downloads, about:debugging, and other about: pages
• Global thin/hidden scrollbar toggle
• Ambient accent gradients

Install

1. about:config → set toolkit.legacyUserProfileCustomizations.stylesheets = true
2. Find your profile folder: about:support → Profile Folder → Open Folder
3. Drop the files into a chrome folder inside it:

<profile>/
└── chrome/
    ├── userChrome.css
    ├── userContent.css
    └── logo.ico        # newtab logo (any image works as long as it's a named logo.ico)

4. Restart Firefox.

Feel free to customize, change colors, or whatever.