heyhank: Skill for Claude Code

.agents/skills/colorize/SKILL.md

colorize is a skill for Claude Code, Codex from heyhank-app/heyhank. It costs 25 tokens per session (1,671 once invoked), scanned A, a copy of colorize, MIT.

A design guide for adding purposeful color to interfaces that feel overly gray or visually flat. It first considers the audience, use cases, brand tone, and existing colors.

In plain words
What is it for?
Use it when reviewing or refining a mostly monochrome interface. It helps decide where and how to introduce color within an existing design.
Why use it?
It helps avoid random color choices that do not fit the product or its users. It identifies where color could improve warmth, personality, and visual interest.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is heyhank-app/heyhank's own configuration. It tells Claude Code and Codex how to work on heyhank itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything heyhank configures →

Reuse

Borrowing it

Nothing to install: this file belongs to heyhank-app/heyhank. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/heyhank-app/heyhank/main/.agents/skills/colorize/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/heyhank-app/heyhank

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 colorize

README.md
[![agentmods](https://agentmods.dev/badge/skills/heyhank-app/heyhank/colorize/github.svg)](https://agentmods.dev/skills/heyhank-app/heyhank/colorize)
Your own site
<a href="https://agentmods.dev/skills/heyhank-app/heyhank/colorize"><img src="https://agentmods.dev/badge/skills/heyhank-app/heyhank/colorize/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 colorize

Your own site · 80×15
<a href="https://agentmods.dev/skills/heyhank-app/heyhank/colorize"><img src="https://agentmods.dev/badge/skills/heyhank-app/heyhank/colorize.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,671 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 88% 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 $0.00025 $0.01671
Opus 5 $0.00013 $0.00835
Sonnet 5 $0.00005 $0.00334
Haiku 4.5 $0.00003 $0.00167

Measured 9d ago against content hash 3243c4db2620, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

colorize 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 9d 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

88% identical to colorize — 27 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.

.agents/skills/colorize/SKILL.md · 158 lines

How it starts

The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Strategically introduce color to designs that are too monochromatic, gray, or lacking in visual warmth and personality.

MANDATORY PREPARATION

Context Gathering (Do This First)

You cannot do a great job without having necessary context, such as target audience (critical), desired use-cases (critical), brand personality/tone, and especially existing brand colors.

Attempt to gather these from the current thread or codebase.

  1. If you don't find exact information and have to infer from existing design and functionality, you MUST STOP and STOP and call the AskUserQuestionTool to clarify. whether you got it right.
  2. Otherwise, if you can't fully infer or your level of confidence is medium or lower, you MUST STOP and call the AskUserQuestionTool to clarify. clarifying questions first to complete your context.

Do NOT proceed until you have answers. Guessing leads to generic AI slop colors.

Use frontend-design skill

Use the frontend-design skill for design principles and anti-patterns. Do NOT proceed until it has executed and you know all DO's and DON'Ts.


Assess Color Opportunity

Analyze the current state and identify opportunities:

  1. Understand current state:

    • Color absence: Pure grayscale? Limited neutrals? One timid accent?
    • Missed opportunities: Where could color add meaning, hierarchy, or delight?
    • Context: What's appropriate for this domain and audience?
    • Brand: Are there existing brand colors we should use?
  2. Identify where color adds value:

    • Semantic meaning: Success (green), error (red), warning (yellow/orange), info (blue)
    • Hierarchy: Drawing attention to important elements
    • Categorization: Different sections, types, or states
    • Emotional tone: Warmth, energy, trust, creativity
    • Wayfinding: Helping users navigate and understand structure
    • Delight: Moments of visual interest and personality

If any of these are unclear from the codebase, STOP and call the AskUserQuestionTool to clarify.

Read the full file on GitHub · 158 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. 9d ago First seen · 158 lines · 25 tokens per session scan A 3243c4db2620

Subscribe to this mod's changes

colorize is a skill published in the GitHub repository heyhank-app/heyhank (34 stars, last pushed 3mo ago), licensed MIT. It adds 25 tokens to every session and 1,671 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to colorize, differing in 27 lines, and is treated as a copy.

Related

Other skills, from other repositories

brand-landingpage

Brand-first landing page designer — runs a brand-identity interview (colors, typography, shape language), then generates and iterates on a polished landing page via Stitch with deployment-ready HTML. Use when the user asks to create, design, or build a landing page, homepage, or marketing page and has no established…

wshobson/agents · 112 tokens

smui

Local copy of the smui ("spacemolt") design system ( ), adapted for the CAD Viewer. smui is a Nord-inspired terminal aesthetic for shadcn/ui with light and dark modes: sharp edges, monospace everything. Read this whole document before restyling viewer UI.

earthtojake/text-to-cad · 0 tokens

web-animation-design

Design and implement web animations that feel natural and purposeful. Use this skill proactively whenever the user asks questions about animations, motion, easing, timing, duration, springs, transitions, or animation performance. This includes questions about how to animate specific UI elements, which easing to use…

vercel-labs/open-agents · 177 tokens

frontend-ui-dark-ts

Build dark-themed React applications using Tailwind CSS with custom theming, glassmorphism effects, and Framer Motion animations. Use when creating dashboards, admin panels, or data-rich interfaces with a refined dark aesthetic.

microsoft/skills · 48 tokens

openkb-html-critic

Use to review a generated HTML deck or single-page artifact for visual quality and structural correctness. Especially good at catching CSS specificity bugs where slide-modifier classes (.divider, .center, .q, .flow etc.) accidentally override the base .slide{display:none} and cause one slide to stack on top of every…

VectifyAI/OpenKB · 132 tokens

design-context-extract

Extract design DNA from app screenshots, live URLs, or screen recordings using Google Stitch — color palettes, typography, spacing tokens, component patterns, and motion specs as design-tokens.json or Tailwind config. Use when the user points to a screenshot, URL, or video and asks to extract or audit the design…

yonatangross/orchestkit · 84 tokens