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Agent skill

Dark Mode Testing

by spencerpauly in spencerpauly/awesome-cursor-skills

Toggle between light and dark mode in Cursor's browser, screenshot both states, and flag missing token mappings or contrast issues.

CC0-1.0Auto-check passedFrontend & Design

Install Dark Mode Testing

skills CLI
$ npx skills add spencerpauly/awesome-cursor-skills --skill dark-mode-testing -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install spencerpauly/awesome-cursor-skills dark-mode-testing --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/spencerpauly/awesome-cursor-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/resources/dark-mode-testing .claude/skills/dark-mode-testing && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
dark-mode-testing
GitHub stars
843
Token cost
~548 tokens
SKILL.md length
212 words
Files
1
Skills in repo
60
Repo updated
First seen
Licence
CC0-1.0

At a glance

Toggle between light and dark mode in Cursor's browser, screenshot both states, and flag missing token mappings or contrast issues.

  • Works in 6 steps: Open the App → Screenshot Light Mode → Toggle Dark Mode → …
  • Tasks that involve Theming and dark mode
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Dark Mode Testing is an agent skill from spencerpauly/awesome-cursor-skills. Toggle between light and dark mode in Cursor's browser, screenshot both states, and flag missing token mappings or contrast issues.

Its SKILL.md is about 550 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Frontend & Design, covering Theming and dark mode. The repository describes itself as: A curated list of awesome skills for Cursor. The licence is CC0-1.0.

When your agent uses it

  • Tasks that involve Theming and dark mode

Example prompts

  • “/dark-mode-testing”

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Open the App
  2. Screenshot Light Mode
  3. Toggle Dark Mode
  4. Screenshot Dark Mode
  5. Inspect for Issues
  6. Report

What it can do on your machine

Read from SKILL.md and the folder at commit 99cd265. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are javascript).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Dark Mode Testing loads about 548 tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 212 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~37
When it runs · the whole SKILL.md, loaded when a task matches
~548

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from spencerpauly/awesome-cursor-skills at commit 99cd265, republished under its CC0-1.0 licence (© spencerpauly). 212 words, ~548 tokens.

Download SKILL.mdSave it as .claude/skills/dark-mode-testing/SKILL.md (or your agent's skills folder).
name
dark-mode-testing
description
Toggle between light and dark mode in Cursor's browser, screenshot both states, and flag missing token mappings or contrast issues.
user-invocable
true

Dark Mode Testing

Verify that dark mode works correctly by toggling themes and comparing.

Workflow

1. Open the App

Navigate to the target page using browser_navigate.

2. Screenshot Light Mode

Take a screenshot of the page in its default (light) state using browser_take_screenshot.

3. Toggle Dark Mode

Toggle dark mode using one of these methods (try in order):

  1. Class toggle: Execute JS to add dark class to <html>:
    javascript
    document.documentElement.classList.toggle('dark')
  2. Attribute toggle: Set data-theme="dark":
    javascript
    document.documentElement.setAttribute('data-theme', 'dark')
  3. Media query: Use browser to emulate prefers-color-scheme: dark
  4. UI toggle: Find the theme toggle button in browser_snapshot and click it
4. Screenshot Dark Mode

Take another screenshot after toggling.

5. Inspect for Issues

Check the browser_snapshot aria tree and screenshots for:

  • White flashes: Elements with hardcoded bg-white instead of bg-white dark:bg-slate-900
  • Invisible text: Text color that matches the dark background (e.g. black text on dark bg)
  • Missing borders: Borders using light-only colors that disappear on dark backgrounds
  • Contrast violations: Text that's too low-contrast against the dark background (need 4.5:1)
  • Hardcoded colors: Any #ffffff, #000000, white, black in inline styles
  • Images: Logos or icons that don't have dark mode variants
  • Shadows: Box shadows that are invisible on dark backgrounds
  • Form inputs: Input fields that keep white backgrounds in dark mode
6. Report
Dark Mode Test:
  Light mode: OK
  Dark mode issues found:
    - Header logo: white logo invisible on dark bg (needs dark variant)
    - Card borders: border-gray-200 invisible on dark bg → add dark:border-gray-700
    - Footer text: hardcoded #333 → use text-gray-900 dark:text-gray-100

Fix each issue and re-test.

© spencerpauly, CC0-1.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in resources/dark-mode-testing of spencerpauly/awesome-cursor-skills.

Open the folder on GitHubat commit 99cd265

Compare with similar skills

Dark Mode Testing next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Dark Mode Testing compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Dark Mode Testing this skillspencerpauly/awesome-cursor-skills843—~548Automated safety check: PassCC0-1.0
Impeccablebestofjs/bestofjs3.1k27 repos~2.6kAutomated safety check: PassMIT
Figma Design System Builderwarpdotdev/warp65k2 repos~4.4kAutomated safety check: PassAGPL-3.0
Tailwindcss Developmentanonaddy/anonaddy4.9k10 repos~865Automated safety check: PassMIT
UI StylingOhh-889/skyroc79513 repos~2.5kAutomated safety check: PassMIT
MCP Developmentcoollabsio/coolify63k1 repos~949Automated safety check: PassMIT

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Categories

Questions about Dark Mode Testing

What does Dark Mode Testing do?

Toggle between light and dark mode in Cursor's browser, screenshot both states, and flag missing token mappings or contrast issues. Dark Mode Testing is an agent skill from spencerpauly/awesome-cursor-skills. Toggle between light and dark mode in Cursor's browser, screenshot both states, and flag missing token mappings or contrast issues.

When should I use Dark Mode Testing?

Dark Mode Testing fits situations like: tasks that involve Theming and dark mode.

How do I install Dark Mode Testing in Claude Code?

Run `npx skills add spencerpauly/awesome-cursor-skills --skill dark-mode-testing -a claude-code`. Or copy the skill folder (resources/dark-mode-testing in spencerpauly/awesome-cursor-skills) into .claude/skills/dark-mode-testing in your project. Claude Code loads it when a task matches its description.

How do I install Dark Mode Testing in Codex?

Run `npx skills add spencerpauly/awesome-cursor-skills --skill dark-mode-testing -a codex`. Or copy the skill folder (resources/dark-mode-testing in spencerpauly/awesome-cursor-skills) into .agents/skills/dark-mode-testing in your project. Codex loads it when a task matches its description.

Can I use Dark Mode Testing in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add spencerpauly/awesome-cursor-skills --skill dark-mode-testing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/dark-mode-testing, .gemini/skills/dark-mode-testing, .github/skills/dark-mode-testing and .opencode/skills/dark-mode-testing in your project.

What does Dark Mode Testing need to run?

SKILL.md names no scripts, command-line tools or credentials: Dark Mode Testing is instructions for the agent only.

Does Dark Mode Testing access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Dark Mode Testing safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Dark Mode Testing use?

Dark Mode Testing is published under the CC0-1.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Dark Mode Testing use?

About 548 tokens (SKILL.md is roughly 2.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Dark Mode Testing?

Skills that share tags, products or a category with Dark Mode Testing: Impeccable (bestofjs/bestofjs, 3.1k stars), Figma Design System Builder (warpdotdev/warp, 65k stars), Tailwindcss Development (anonaddy/anonaddy, 4.9k stars) and UI Styling (Ohh-889/skyroc, 795 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Dark Mode Testing?

spencerpauly (a GitHub user) maintains it in spencerpauly/awesome-cursor-skills, which has 843 GitHub stars. The repository holds 60 skills in this directory. The repository was last updated on August 2, 2026.

Source: spencerpauly/awesome-cursor-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.