Seaglass

A soft-pastel frosted glass theme for Zed, built from an original palette. The editor, panels, tabs and bars stay transparent over a blurred window, while every floating surface (command palette, completions, hovers, menus, tooltips) is fully opaque so nothing bleeds through and stays readable.

It ships in three transparency levels, for both dark and light (six variants):

Level	Dark	Light
Very transparent	Seaglass Airy	Seaglass Light Airy
Medium	Seaglass	Seaglass Light
Least transparent	Seaglass Deep	Seaglass Light Deep

Blur is always on; the level scales how much tint sits behind the editor, the chrome (panels/bars) and the whole window. "Airy" keeps the editor fully clear; "Deep" adds the most tint for readability over busy wallpapers.

Transparency & blur

Seaglass sets background.appearance: "blurred" and keeps the editor transparent, so the look relies on your OS window compositor supporting transparency/blur. On macOS this works out of the box. If you use an opaque window/titlebar override, the glass effect won't show.

How it's built

The palette and an explicit role map for every UI, syntax, terminal and player color are generated into themes/seaglass.json. Every supported theme key is assigned in all six variants, so nothing falls back to a Zed default. To tweak a color, edit themes/seaglass.json directly.

Install locally (dev extension)

1. Open Zed.
2. Command palette → zed: install dev extension.
3. Select this folder (seaglass-theme/).
4. Open the theme selector (theme selector: toggle) and pick Seaglass (or Seaglass Light).

To point your settings at it directly:

"theme": {
  "mode": "system",
  "light": "Seaglass Light Airy", // pick your level: Airy / (none) / Deep
  "dark": "Seaglass Airy"
}

No experimental.theme_overrides needed — everything is baked into the theme.

Publish to the Zed extension registry

1. Push this repo to GitHub (keep repository in extension.toml in sync).
2. Fork zed-industries/extensions.
3. Add this repo as a submodule in your fork:

   git submodule add https://github.com/mrcoolbay/seaglass-theme.git extensions/seaglass-theme

4. Add an entry to extensions.toml:

   [seaglass-theme]
   submodule = "extensions/seaglass-theme"
   version = "0.1.0"

5. Run pnpm sort-extensions, commit, and open a pull request.

License

MIT © MrCoolBay