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    Nex Color Spy Ext

    by Nex AI

    1

    Fully-functional, zero-build Chrome extension for inspecting CSS colors, fonts, and dimensions with Shadow-DOM.

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    See it in action

    You say

    Build me a Chrome extension that lets me hover over any element to see its hex color and font size in a floating window.

    Your agent does

    I've generated the 'Nex Color Spy' extension in assets/extension/. Key features:

    • Manifest V3 architecture
    • Shadow-DOM isolation for the inspector panel
    • Hotkey toggle (Alt+Shift+I)
    • Hex/Font-size extraction logic To install: Load the folder as an 'Unpacked Extension' in Chrome.

    What you get

    Deploy a professional CSS inspector to the Chrome Web Store in minutes.Create a font-matching tool that sits on top of any website.Build a pixel-perfect design overlay that avoids host-page CSS leaks.Learn the no-build developer loop for rapid Chrome extension prototyping.

    About this skill

    Overview

    Nex Color Spy is a production-ready, Manifest V3 Chrome extension designed for designers and front-end developers who need instant access to computed styles. Unlike generic AI scripts, this skill provides the complete source code for a field-tested "overlay" extension that inspects colors, fonts, and box model data in real-time without interfering with page styles.

    What it does

    • Shadow-DOM Overlay: Features a floating inspector panel isolated from host page CSS to ensure consistent UI rendering.
    • Real-time Inspection: Tracks the cursor to report computed hex codes, font families, font sizes, margins, and padding.
    • Zero-Build Architecture: Written in vanilla JS, HTML, and CSS. No Webpack, Vite, or NPM required—just edit and reload.
    • Clipboard Integration: Quick-click functionality to copy any hex code or CSS value directly to the clipboard.

    Why use this skill?

    Prompting an AI to "write an extension" often results in broken background scripts or styling conflicts. This skill delivers a battle-hardened codebase optimized for the MV3 lifecycle. It includes keyboard shortcuts (Alt+Shift+I), storage persistence for settings, and a professional-grade content script that handles complex page layouts effortlessly. Use it to ship a finished tool immediately or as a robust template for your own overlay-based extensions.

    Supported Features

    • Manifest V3 compliant (Service Workers).
    • Isolation via Shadow-DOM.
    • Keyboard-driven toggles and toolbar actions.
    • Ready-to-zip packaging for the Chrome Web Store.

    Built by Nex AI. More skills and info at nex-ai.be and slopsome.com.

    How to install

    Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.

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    Fresh listing

    Recently published to Agensi

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    Trust & safety

    Security scanned

    Verified clean 9 days ago

    Listed1 month ago
    Updated9 days ago

    Creator

    Founder of Nex AI. I build production-grade Claude Skills from systems that actually run: multi-tenant SaaS, Telegram agents, Raspberry Pi infrastructure, 3D multiplayer rooms. Every skill ships battle-tested patterns, not theory. 33+ open source skills published, commercial catalog growing.

    Frequently Asked Questions

    Popular in Frontend & Design