Cremisi

Cremisi for Zed

Both variants in one theme family for Zed: Cremisi Obsidian (dark) and Cremisi Ivory (light), editor and interface together.

Install

As a dev extension: open the extensions page (ctrl-shift-x), click Install Dev Extension and pick this folder, ports/zed, the one that holds extension.toml.

Or as a local theme: copy themes/cremisi.json into ~/.config/zed/themes (macOS and Linux) or %APPDATA%\Zed\themes (Windows). Zed reads it the next time it starts.

Use

Open the theme selector (ctrl-k ctrl-t, or theme selector: toggle from the command palette) and pick Cremisi Obsidian or Cremisi Ivory. To follow the system appearance, set both in your settings:

"theme": {
  "mode": "system",
  "light": "Cremisi Ivory",
  "dark": "Cremisi Obsidian"
}

Roles

• Syntax speaks the roles of the palette rules, translated into the capture names of Zed's Tree-sitter queries. The theme also styles the names that semantic tokens look up, for "semantic_tokens": "combined".
• The interface is built from the stone and blood scales: the editor lies on the ground, panels, tabs, title and status bars on the sunken stone. Crimson is the only accent: cursor, selection, focus, the selected entry.
• Your cursor is crimson; collaborators take lapis, malachite, amber, amethyst, verdigris, sealing wax and petal.
• The terminal takes its sixteen colours from the materials; the dim ones are the same materials read from the other variant, darker on Obsidian and paler on Ivory.

Every code token clears 4.5:1 against its own background; only comments, the smoke of incense, may fall below.

What Zed cannot tell apart

Zed's queries name some roles more broadly than Sublime Text and VS Code do, so a few tokens take a neighbour's colour:

• Python captures every keyword alike: if, return and import are blood italic, like def. Rust does the same for use and mod, which stay blood rather than wine.
• Null shares its capture with CSS keyword values (flex, none) and C++ all-caps names, and booleans and null are blood in JSON and YAML too, where the other ports make them amber.
• YAML keys are properties, in verdigris; anchors and tags are types, in tallow.
• Attributes are one capture in HTML and in Rust or C: #[derive] is tallow, like class=, not sealing wax.
• Special punctuation is sealing wax: the braces of interpolations, and in TypeScript the :, | and ? of types.
• Markdown headings have one level: all are blood.

Built, not drawn

The theme is generated from the same palette.yaml as the other ports and the page:

python3 ports/zed/generate.py      # from the root of vari-sh/Cremisi-Theme

generate.py maps each Zed capture to a material; a capture without its own entry falls back to its longest defined prefix, so keyword.control.return reads keyword.control. Checked against the queries that ship with Zed 1.26.