theme-factory

A guide for applying a consistent set of colors and fonts to an existing slide deck, document, report, workbook, or HTML file. It changes the visual style while keeping the existing content structure and meaning.

In plain words
What is it for?
Use it to choose or create a visual theme and apply it to an existing artifact when the requested work is visual styling rather than writing new content or redesigning an interface.
Why use it?
It avoids manually restyling each part of an artifact and reduces inconsistent visual choices. The content and editability remain intact while the appearance becomes more coherent.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/evoelsewhere/evoflux/theme-factory
Any agent
npx skills add evoelsewhere/evoflux --skill theme-factory
Clone the repo
git clone --depth 1 https://github.com/evoelsewhere/evoflux

Made for: Claude Code, Codex.

Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 552 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00065 $0.00552
Opus 5 $0.00032 $0.00276
Sonnet 5 $0.00013 $0.00110
Haiku 4.5 $0.00006 $0.00055

Measured 2d ago against content hash d2805d50852c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

theme-factory scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

app/agent/builtin_skills/theme-factory/SKILL.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Apply an artifact theme

Preserve the artifact's content, hierarchy, semantics, and editability. Change only the visual system the user requested. Do not load the showcase or any theme specification when this skill activates.

Select the theme

  • If the user names a bundled theme, read only its file in themes/ and apply it without asking for reconfirmation.
  • If the brief supplies a clear palette, tone, brand rule, or visual reference, map it to the closest bundled theme or create a compatible custom theme and continue without asking about internal preset names.
  • If visual direction is genuinely absent and different choices would materially change the artifact, show theme-showcase.pdf and ask once for a choice. Do not show the showcase merely because it exists.

Bundled themes are Ocean Depths, Sunset Boulevard, Forest Canopy, Modern Minimalist, Golden Hour, Arctic Frost, Desert Rose, Tech Innovation, Botanical Garden, and Midnight Galaxy.

Define the contract

Record background, surface, primary text, muted text, accent, success/warning roles, heading/body/utility fonts, contrast requirements, and any brand-fixed values. For a custom theme, give it a descriptive name and define the same roles. Do not invent a logo, brand color, or font license.

Apply

Use the artifact's native styling mechanism: masters/themes for slides, styles for documents, cell styles for workbooks, or tokens/CSS variables for HTML. Update repeated components consistently. Preserve charts, data encodings, semantic status colors, template lineage, formulas, and accessible reading order unless the user explicitly asks to change them.

Verify

Render or preview the full artifact after applying the theme. Check contrast, font availability/substitution, hierarchy, chart legibility, table density, links, clipping, and consistency across representative and edge pages/slides/ sheets. Correct local overrides that accidentally retain the old theme.

Stop conditions

Stop when the theme roles are applied consistently, the artifact remains editable and semantically unchanged, and visual verification exposes no unresolved contrast, substitution, clipping, or stale-style defect.

Read the full file on GitHub · 59 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 59 lines · 65 tokens per session scan A d2805d50852c

Subscribe to this mod's changes

theme-factory is a skill published in the GitHub repository evoelsewhere/evoflux (5 stars, last pushed 6d ago), licensed Apache-2.0. It adds 65 tokens to every session and 552 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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