README.md

August 27, 2026 · View on GitHub

dsh-theme: live palettes and typography for DeepSeek Harness

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CI MIT License DeepSeek Harness

dsh-theme is a standalone community plugin for customizing the DeepSeek Harness Web UI. Changes are applied immediately and restored on refresh in the current browser.

Features

  • Light, dark, and system appearance modes.
  • Fifteen curated themes, including five reading-oriented themes and the code-oriented Carbon Code theme.
  • Every preset applies its color hierarchy, UI font, code font, and type sizes as one visual profile.
  • Live accent, background, foreground, surface, and sidebar color controls.
  • Separate UI and code font families.
  • Separate UI and code font sizes.
  • Versioned browser-local theme settings that survive refreshes.

Install

npx @deepseek-ai/dsh plugin --profile web add github:oil-oil/dsh-theme

Restart the web profile, then open Settings → Appearance.

Development

pnpm install
pnpm test
pnpm typecheck
pnpm build

For local development:

npx @deepseek-ai/dsh plugin --profile web add ./dsh-theme

Scope

The plugin uses the official Harness Theme and Slot APIs. Font families and semantic font sizes can therefore be changed without replacing Harness components.

DeepSeek Harness Developer Preview does not yet expose third-party settings namespaces to Web clients. Theme values are therefore stored under the current Harness origin in browser storage; they do not sync across browsers or profiles on different origins.

Harness does not currently expose a global radius token. dsh-theme intentionally avoids fragile global CSS overrides, so component radius customization is not included.

The new reading palettes reinterpret color and tone as Harness light/dark semantic tokens. They do not copy Typora CSS, DOM selectors, or font files, and use independent display names.

Theme modeling and compatibility rules are documented in docs/theme-design.md.

License

MIT

This is an independent community project and is not affiliated with or endorsed by DeepSeek. The DeepSeek Harness logo is sourced from the official DeepSeek Harness repository and is used only to identify the compatible platform.