Bolt — Thunderbird Discourse theme

A Discourse theme that brings the Bolt design system to Thunderbird's community forum at https://discourse.thunderbird.net.

Token sources

The Bolt design system is hosted on Zeroheight; full palette and typography swatches render client-side and aren't extractable via a non-browser fetch. The tokens below were pulled from the static HTML payload of the Bolt site on 2026-05-07. They cover page chrome but not the full semantic palette.

Token	Value	Source
primary (text/ink)	#1A202C	colors.nav.text.main, colors.blocks.content.text.body
secondary (background)	#FEFFFF	colors.nav.background.main
tertiary (link/accent)	#1373D9	colors.accent.background, colors.blocks.content.text.link
primary-medium	#4C4D58	colors.blocks.content.text.secondaryBody
highlight (magenta)	#E20FA4	colors.blocks.upload.background.annotation
Heading font	Inter	fonts.content.heading

danger, success, love use Discourse defaults pending a Bolt-confirmed pass.

Install

After committing to a release tag (e.g. v0.1.0):

1. Discourse admin → Customize → Themes → "Install" → "From a git repository"
2. URL: https://github.com/thunderbird/discourse-theme-bolt
3. Tag: v0.1.0
4. Set as default theme.

Optionally bake into the container by adding to discourse-deploy's container/containers/app.yml:

env:
  DISCOURSE_THEMES_INSTALL: "https://github.com/thunderbird/discourse-theme-bolt#v0.1.0"

Layout

discourse-theme-bolt/
├── about.json             theme manifest + color_schemes
├── common/common.scss     core styles (Inter font, palette)
├── desktop/desktop.scss   desktop-specific overrides
├── mobile/mobile.scss     mobile-specific overrides
└── locales/en.yml         theme metadata strings

TODO

• Pull the full Bolt palette (light + dark variants, semantic semantic colors) from a browser-side render of the Storybook
• Confirm body font (currently assumed = Inter, same as headings)
• Replace danger/success/love placeholders with Bolt-blessed values
• Add a dark color scheme variant (the design system has dark mode)
• Component-extract pieces that can become standalone theme components (header tweaks, etc)