Examine source code of Picky Color

{
  "manifest_version": 3,
  "name": "Picky Color",
  "version": "1.7",
  "description": "A powerful color picker tool with history, color wheel, and more.",
  "permissions": [
    "activeTab",
    "storage",
    "scripting"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_scripts/picker.js"
      ]
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "48": "icons/icon.png"
    }
  },
  "icons": {
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pickycolor@colorthepage.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "interaction_data": false,
        "technical_data": false,
        "required": [
          "none"
        ]
      }
    }
  },
  "commands": {
    "pick_color": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y",
        "mac": "Command+Shift+Y"
      },
      "description": "Pick a color from the current page"
    },
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+E",
        "mac": "Command+Shift+E"
      },
      "description": "Open Picky Color popup"
    }
  }
}