ColaMD-themes

ColaMD Themes

Topics: dsh deepseek-harness colamd themes css markdown pdf html skill ai-agent

A theme development & export toolkit for ColaMD — the Agent-native Markdown editor. Extract visual formatting from web pages, Word documents, and PDFs, convert them into validated CSS theme files, and export Markdown to standalone HTML or PDF with any theme applied.

Features

Theme Extraction

• URL — fetch a web page, parse its CSS rules (via css-tree), resolve inline styles with specificity calculation, and derive a coherent theme palette
• DOCX — read Word document styles (H1–H6, tables, code blocks) via mammoth, map to theme variables
• PDF — extract typography metadata from PDF text using multi-layer heuristic analysis
• Auto‑detect — extract command automatically routes to the right extractor

HTML / PDF Export

• export-html — render Markdown to a standalone HTML document with theme CSS embedded, Mermaid diagrams and KaTeX math fully rendered
• export-pdf — render Markdown to PDF via Puppeteer (Chromium); theme colors are preserved with print-color-adjust: exact
• export — batch export multiple files or entire directories to HTML or PDF
• Powered by @bytechain.cn/colamd/renderer (2.x library build, requires @bytechain.cn/colamd@^2.7.8-rc.2) — the same CM6 editor as the app runs headless via Puppeteer. Theme CSS is consumed directly as :root declarations, buildExportHTML({ title }) serializes only contract live variables, and mermaid diagrams (Pele SVG) / KaTeX math stay fully rendered offline. Built-in theme names resolve their local contract CSS first. Generated themes target the 2.7.8-rc.2 contract, so they carry over unchanged.

Theme Management

• set-theme — configure default export theme, register custom CSS themes, switch between built-in themes
• Built-in themes: light, dark, elegant, newsprint
• Custom themes: any .css file registered by name, referenced in exports
• Using themes in the ColaMD 2.7.7+ app — import via Theme > Import Theme or drop the .css into ~/.colamd/themes/. The app ships its own built-in elegant; rename our elegant.css (e.g. elegant-brick.css) before importing to avoid a name clash.

Validation & Color Systems

• Contrast Engine — WCAG 2.1 relative luminance & contrast ratio calculations
• Paradigm Validator — 15+ design constraint rules (CR, HR, SL, NT, BD, MP, FP, FS, SH) with auto-fix suggestions
• Color System Library — 15 predefined seed palettes across 5 families (Morandi, Macaron, Nordic, Vintage, Mint)
• 2.7.8-rc.2 CSS Contract Validator — flags dead selectors (#write, .ProseMirror, body.theme-custom), dead variables (--mermaid-*, --radius-*, --font-size-root…), pt units, and vertical padding on quote/code lines
• 2.7.8-rc.2 Verified — all 16 shipped themes audited against @bytechain.cn/colamd@2.7.7 (contract unchanged through 2.7.8-rc.2) and smoke-tested on the 2.7.8-rc.2 export pipeline: zero .cm-md-* hook drift, all :root live variables and --pele-* overrides consumed, exports carry exactly the 27 contract live variables
• Pele Diagram Colors — 9 --pele-* variables derived from --code-block-bg / --code-block-text / --link-color, replacing the 20 Mermaid variables
• Platform backward compatibility (v0.5.3+) — src/compat.ts probes the installed @bytechain.cn/colamd version and its themes/contract.json for contract drift; validate prints a "平台兼容" report line and the renderer verifies the export API surface (applyTheme / setMarkdown / ensureAllPluginsRendered / buildExportHTML) before rendering. Platform upgrades produce actionable diagnostics (version + fix command) instead of cryptic mid-render failures

Security & Performance (v0.4.0+)

• SSRF Protection — URL extractor validates against protocol whitelist and blocks private network access to prevent Server-Side Request Forgery attacks
• Input Validation — CSS files validated for extension, size limit (1MB max), and content validity to prevent OOM attacks
• Async I/O — Non-blocking file operations for improved responsiveness during batch exports
• Template Caching — LRU-style cache (max 10 templates) with TTL expiration (30min) and mtime-based auto-invalidation for stable memory usage
• Unified Error Handling — Structured error codes (CLIError + ErrorCode) across all commands for consistent debugging experience
• Resource Cleanup — Explicit Puppeteer page cleanup prevents zombie processes and resource leaks

CSS Template Engine

Handlebars-powered template produces ColaMD 2.7.8-rc.2 contract CSS (≤300 lines):

Section	Content
1	Design Tokens — :root seed palette (11 vars), 14 semantic colors, fonts, metrics, 9 --pele-*
2	Editor DOM — #editor .cm-content + .cm-md-* (headings, inline, quote, code block, table, indent)
3	Exported HTML — .colamd-document color layer for semantic tags
4	@media print — print-color fidelity only (screen rules already apply)

MCP Server (Model Context Protocol)

Full MCP server for AI-native integration — connect ColaMD-themes to Chatbox, Cursor, Claude Desktop, Continue, and all MCP-compatible clients.

• 14 MCP tools covering theme extraction, export, validation, and management
• Stdio transport — zero network config, direct process communication
• Chinese theme name support — non-ASCII names handled via smart path resolution

Category	Tool	Description
Extraction	extract_from_url	Theme from web page
	extract_from_docx	Theme from Word doc
	extract_from_pdf	Theme from PDF
	extract_auto	Auto-detect source
Management	list_themes	List all themes
	validate_theme	Validate theme rules
	check_fonts	Check font availability
	set_theme	Register custom theme
Color	list_color_systems	15 built-in palettes
	list_mermaid_presets	3 Mermaid presets
Export	export_html	Markdown to HTML
	export_pdf	Markdown to PDF
	export_batch	Batch export

Multi-Agent Skill

Universal skill definitions for 6 AI coding agents (7 outputs — Trae gets both workspace rules and a project skill), auto-generated from a single source:

Agent	Skill Path	Frontmatter
Claude Code	.claude/skills/colamd-themes.skill.md	name, description
OpenCode	.opencode/skills/colamd-themes/SKILL.md	name, version, user-invocable, allowed-tools, hooks
OpenClaw	.openclaw/skills/colamd-themes/SKILL.md	id, name, version, icon, author, homepage, metadata.openclaw.os
Hermes	.hermes/skills/tools/colamd-themes/SKILL.md	name, version, author, license, metadata.hermes.tags, prerequisites
Trae (rules)	.trae/rules/colamd-themes.md	Plain Markdown (no frontmatter)
Trae (skill)	.trae/skills/colamd-themes/SKILL.md	name, description (single-line plain scalar)
DeepSeek Harness	.dsh/skills/colamd-themes/SKILL.md	name, version, description, metadata.dsh.tags, prerequisites

Architecture:

skills/colamd-themes/SKILL.md       ← Canonical source (single source of truth)
        │
        ▼
skills/build-skills.sh              ← Build script (bash)
        │
        ├──→ .claude/skills/colamd-themes.skill.md
        ├──→ .opencode/skills/colamd-themes/SKILL.md
        ├──→ .openclaw/skills/colamd-themes/SKILL.md
        ├──→ .hermes/skills/tools/colamd-themes/SKILL.md
        ├──→ .trae/rules/colamd-themes.md
        ├──→ .trae/skills/colamd-themes/SKILL.md
        └──→ .dsh/skills/colamd-themes/SKILL.md

Regenerate all agent skills:

npm run build:skills            # generate all
bash skills/build-skills.sh     # same thing

# Or generate for a single agent:
bash skills/build-skills.sh claude
bash skills/build-skills.sh opencode
bash skills/build-skills.sh openclaw
bash skills/build-skills.sh hermes
bash skills/build-skills.sh trae
bash skills/build-skills.sh trae-skill
bash skills/build-skills.sh dsh

To customize: edit skills/colamd-themes/SKILL.md, then run npm run build:skills.

DSH Plugin (dsh-market)

The package is also a DSH (DeepSeek Harness) plugin bundle installable from dsh-market:

• Plugin contract — package.json declares dsh.bundle.patch pointing to cordis.patch.yml, which inserts the colamd-themes Cordis entry into the profile's composition
• Host entry — src/dsh-plugin.ts exports the Cordis protocol (name / inject: ["skills"] / apply) and registers the bundled skills/colamd-themes/SKILL.md with the Harness skills service via ctx.skills.registerProvider (same provider protocol as the bundled dsh-ppt plugin)
• CLI bins — colamd-themes / cthemes ship with the package and become available to profile agents after install
• Runtime compatibility — @deepseek-ai/dsh-skill is declared as an optional peer (^0.1.5-rc.1 || ^0.2.0-rc || ^0.2.1-rc || ^0.3.0-rc || ^0.4.0-rc; semver's prerelease rule forces per-patch enumeration — append a comparator when a new rc line ships): the market checks it against the DSH runtime version, while standalone npm install is unaffected
• Backward compatibility — the runtime consumes only the stable BUNDLED_SKILL_RANK constant, and the host entry's apply() tolerates skills-service protocol drift (warning instead of a broken profile load)
• Platform compat layer — src/compat.ts probes the installed @bytechain.cn/colamd version and its themes/contract.json for contract drift, and the renderer verifies the export API surface at init; platform upgrades are diagnosed clearly at cthemes validate/export time instead of failing cryptically
• Bundle contents — dist/ (CLI + host entry), themes/ (16 contract CSS themes), skills/ (bundled skill), cordis.patch.yml

Install from a DSH profile (once published to npm): add @bytechain.cn/colamd-themes through the dsh-market UI or dsh plugin --profile <name> add @bytechain.cn/colamd-themes.

Installation

git clone git@github.com:byteuser1977/ColaMD-themes.git
cd ColaMD-themes
npm install
npm run build

For development with hot‑reload:

npx tsx src/cli.ts <command>

Usage

The package provides two equivalent CLI commands:

• colamd-themes — full command name
• cthemes — short alias (recommended for frequent use)

Examples below use the short alias cthemes, but you can substitute colamd-themes interchangeably.

Extract a theme from a URL

cthemes from-url "https://example.com" --name my-theme

Extract from a Word document

cthemes from-docx report.docx --name corporate-theme

Extract from a PDF

cthemes from-pdf paper.pdf --name academic-theme

Auto‑detect source type

cthemes extract source.docx --name auto-theme

Validate a theme

cthemes validate themes/my-theme.css

List themes and color systems

cthemes list
cthemes color-systems

Export to HTML

# Single file with a built-in theme
cthemes export-html document.md -t elegant -o output.html

# With a custom theme
cthemes export-html document.md -t my-brand -o output.html

Export to PDF

# Single file
cthemes export-pdf document.md -t dark -o output.pdf

# With page format
cthemes export-pdf document.md -t elegant --format Letter -o output.pdf

Batch export

# Multiple files to HTML
cthemes export docs/*.md --format html -t light -d output/

# Directory of Markdown files to PDF
cthemes export docs/ --format pdf -t elegant -d output/

Theme management

# Set a built-in theme as default
cthemes set-theme elegant --default

# Register a custom theme from a CSS file
cthemes set-theme my-brand --css themes/swiss-design.css

# Register and set as default
cthemes set-theme my-brand --css themes/swiss-design.css --default

# Unregister a custom theme
cthemes set-theme my-brand --remove

All commands

Command	Description
from-url <url>	Extract theme from a web page URL
from-docx <file>	Extract theme from a .docx document
from-pdf <file>	Extract theme from a PDF document
extract <source>	Auto-detect source type and extract theme
color-systems	List 15 built-in color systems
list	List all generated themes
validate <file>	Validate a theme against the 2.7.8-rc.2 contract and paradigm rules (with a platform compat report)
set-theme <name>	Set, register, or remove export themes
export-html <input>	Export Markdown → standalone HTML
export-pdf <input>	Export Markdown → PDF
export <inputs...>	Batch export multiple files or directories

Extract options

Flag	Description
-n, --name	Theme name (derived from source by default)
-o, --output	Output CSS file path
-d, --themes-dir	Themes directory (default: themes/)
-c, --color-system	Force a color system
-A, --auto-match	Auto-match a color system from the extracted palette

Export options

Flag	Description
-t, --theme	Theme name (built-in, custom, or CSS file path)
-o, --output	Output file path
-d, --output-dir	Output directory for batch export
--format	Output format for batch: html or pdf (default: html)
--format	PDF page size: A4, Letter, A3 (default: A4)

How It Works

Theme Extraction Pipeline

Source (URL / .docx / .pdf)
    │
    ▼
┌─────────────────────┐
│  Extractor          │  Parse → raw ThemeStyle
└──────────┬──────────┘
           │
           ▼
┌─────────────────────┐
│  Color System       │  Match → 15 built-in palettes
│  Validators         │  WCAG contrast + paradigm + 2.7.8-rc.2 contract
└──────────┬──────────┘
           │
           ▼
┌─────────────────────┐
│  Template Engine    │  Handlebars → 2.7.8-rc.2 CSS (≤300 lines)
└──────────┬──────────┘
           │
           ▼
  themes/<name>.css

Export Pipeline

Markdown file
    │
    ▼
┌─────────────────────────────────────────────┐
│  Puppeteer (headless Chromium)              │
│  ┌───────────────────────────────────────┐  │
│  │  Local HTTP Server                    │  │
│  │  serves @bytechain.cn/colamd/renderer │  │
│  │  (same-origin, no CORS)              │  │
│  └──────────────┬────────────────────────┘  │
│                 │                            │
│  createColaMDEditor({ editable: false })     │
│  applyTheme(name, customCSS?)                │
│  setMarkdown(content)                        │
│  ensureAllPluginsRendered()  ← mermaid/KaTeX │
│                 │                            │
│  ┌──────────────┴──────────────┐             │
│  │  buildExportHTML({title}) → .html │       │
│  │  page.pdf()        → .pdf   │             │
│  └─────────────────────────────┘             │
└─────────────────────────────────────────────┘

Design Paradigm (2.7.8-rc.2 contract)

Full specification: templates/theme-paradigm.md.

Core Principles

Principle	Description
Variable-first	All colors, fonts, sizes, spacing as CSS custom properties. No raw values in selectors
Modular	Theme = variables + minimal selector tweaks. Built-in systems inherit automatically
Semantic	--link-color not --color-blue; --font-body not --font-sans
Derivable	Full theme from 11 seed tokens + 3 font stacks. AI agents modify only Section 1
Print-faithful	Export prints the current window, so screen rules apply as-is; @media print only adds print-color-adjust
No dead rules	CodeMirror 6 has no #write, .ProseMirror, <h1> or <blockquote> elements — only .cm-md-* line classes

Contrast Requirements (WCAG 2.1)

Rule ID	Level	Requirement	Threshold
CR-01	MUST	Body text vs background	≥ 7:1 (AAA)
CR-02	MUST	Secondary text vs background	≥ 4.5:1 (AA)
CR-03	MUST	Dimmed text vs background	≥ 3:1 (AA large)
CR-04	MUST	Accent color vs background	≥ 4.5:1 (AA)
CR-05	SHOULD	Inline code bg vs background	≥ 1.5:1

Project Structure

ColaMD-themes/
├── skills/
│   ├── colamd-themes/SKILL.md              # Canonical skill source
│   └── build-skills.sh                     # Generate agent-specific files
├── .claude/skills/colamd-themes.skill.md   # Claude Code skill
├── .opencode/skills/colamd-themes/SKILL.md # OpenCode skill
├── .openclaw/skills/colamd-themes/SKILL.md # OpenClaw skill
├── .hermes/skills/tools/colamd-themes/     # Hermes skill
├── .trae/rules/colamd-themes.md           # Trae rules
├── .trae/skills/colamd-themes/            # Trae project skill
├── cordis.patch.yml                        # DSH plugin bundle patch (dsh-market)
├── package.json
├── tsconfig.json
├── themes/                                  # Generated CSS themes
├── src/
│   ├── cli.ts                               # CLI entry point
│   ├── index.ts                             # Public API exports
│   ├── models.ts                            # ThemeStyle / SeedPalette types
│   ├── generator.ts                         # Handlebars → CSS pipeline
│   ├── renderer.ts                          # Puppeteer HTML/PDF export engine
│   ├── export-cli.ts                        # Export CLI commands
│   ├── theme-store.ts                       # Theme config persistence (async API)
│   ├── dsh-plugin.ts                        # DSH host entry (Cordis skill provider)
│   ├── compat.ts                            # Platform compat layer (contract drift + renderer API probe)
│   ├── utils/
│   │   └── cli-utils.ts                     # Shared utilities & error handling
│   ├── color-utils.ts                       # Color manipulation utilities
│   ├── contrast.ts                          # WCAG 2.1 luminance & contrast
│   ├── validators.ts                        # Paradigm validation engine
│   ├── color-systems.ts                     # 15 predefined seed palettes
│   ├── docx-style-paradigm.ts              # Document style specification
│   ├── extractors/
│   │   ├── base.ts                          # Extractor interface
│   │   ├── url-extractor.ts                 # URL → ThemeStyle
│   │   ├── docx-extractor.ts                # DOCX → ThemeStyle
│   │   └── pdf-extractor.ts                 # PDF → ThemeStyle
│   └── templates/
│       ├── template.css                     # Paradigm companion CSS
│       ├── theme-paradigm.md               # v4.0 design specification (2.7.8-rc.2 contract)
│       └── theme-template.hbs              # Handlebars CSS template
└── tests/

Tech Stack

Component	Library	Purpose
Runtime	Node.js + TypeScript	ESM modules, strict typing
CLI framework	Commander.js	Argument parsing, subcommands
CSS templating	Handlebars	2.7.8-rc.2 contract CSS generation
HTML parsing	Cheerio	DOM traversal for URL extraction
CSS parsing	css-tree	CSS rule AST parsing
DOCX parsing	Mammoth	Word → HTML conversion
PDF parsing	pdf-parse	PDF text extraction
HTTP client	Axios	Web page fetching
Browser engine	Puppeteer	Headless Chromium for HTML/PDF export
Editor engine	@bytechain.cn/colamd	CM6-based Markdown renderer (2.7.8-rc.2 contract)
Terminal output	Chalk + Ora	Colored text + spinners

License

MIT