manifest.json

{
    "manifest_version": 3,
    "name": "Color Picker",
    "description": "A simple color picker extension. It can efficiently pick any color from the screen, view the chosen colors, and copy or clear them with a single click.",
    "version": "1.0",
    "action": {
        "default_popup": "index.html"
    },
    "icons": {
        "16": "icons/icon16.png", 
        "32": "icons/icon32.png",
        "48": "icons/icon48.png",
        "128": "icons/icon128.png"
    }
}