color-expert

color-expert is a skill for Claude Code, Codex from mrDesign-ww/vault-os. It costs 42 tokens per session (316 once invoked), scanned A, a copy of color-expert, MIT.

A reference-based skill for working with color, including OKLCH and OKLAB color models, palette creation, accessibility contrast, color naming, pigment mixing, and historical color theory. OKLCH and OKLAB are systems for describing how colors look to people.

In plain words
What is it for?
Use it for palette generation, contrast and accessibility checks, color naming, pigment-mixing questions, and color-theory research.
Why use it?
It helps turn color choices into deliberate palettes and checks instead of choosing colors by guesswork alone.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for palette generation, contrast and accessibility checks, color naming, pigment-mixing questions, and color-theory research.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mrdesign-ww/vault-os/color-expert
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.

Any agent
npx skills add mrDesign-ww/vault-os --skill color-expert
Clone the repo
git clone --depth 1 https://github.com/mrDesign-ww/vault-os

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for color-expert

README.md
[![agentmods](https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/color-expert/github.svg)](https://agentmods.dev/skills/mrdesign-ww/vault-os/color-expert)
Your own site
<a href="https://agentmods.dev/skills/mrdesign-ww/vault-os/color-expert"><img src="https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/color-expert/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for color-expert

Your own site · 80×15
<a href="https://agentmods.dev/skills/mrdesign-ww/vault-os/color-expert"><img src="https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/color-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 316 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod 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 5.1 $0.00042 $0.00316
Opus 5 $0.00021 $0.00158
Sonnet 5 $0.00008 $0.00063
Haiku 4.5 $0.00004 $0.00032

Measured 10d ago against content hash 631d8d5616e9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

color-expert 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 10d 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.

Origin

This is a copy

100% identical to color-expert — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

shell/claude/skills/color-expert/SKILL.md · 44 lines

What it actually says

color-expert

Curated from @meodai.

What it does

Color science expert skill with 286K words of reference material covering OKLCH/OKLAB, palette generation, accessibility/contrast, color naming, pigment mixing, and historical color theory.

Source

How to use

This catalogue entry advertises the skill in Open Design so the agent discovers it during planning. To run the full upstream workflow with its original assets, scripts, and references, install the upstream bundle into your active agent's skills directory:

# Inspect the upstream README for exact paths
open https://github.com/meodai/skill.color-expert

Then ask the agent to invoke this skill by name (color-expert) or with one of the trigger phrases listed in this skill's frontmatter.

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. 10d ago First seen · 44 lines · 42 tokens per session scan A 631d8d5616e9

Subscribe to this mod's changes

color-expert is a skill published in the GitHub repository mrDesign-ww/vault-os (2 stars, last pushed 3d ago), licensed MIT. It adds 42 tokens to every session and 316 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to color-expert, differing in 0 lines, and is treated as a copy.

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