Examine source code of Color Code Picker

{
  "manifest_version" : 3 ,
  "name" : "Color Code Picker",
  "version" : "1.0.1",
  "description" : "Pick the exact color of any pixel on any webpage - instant HEX, RGB, HSL, auto palettes and copy history.",
  "permissions" : [
    "activeTab" ,
    "storage" ,
    "scripting" ,
    "webRequest" ,
    "webRequestBlocking" 
  ],
  "icons" : {
    "16" : "icons/icon16.png",
    "32" : "icons/icon32.png",
    "48" : "icons/icon48.png",
    "128" : "icons/icon128.png"
  },
  "action" : {
    "default_title" : "Pick Color",
    "default_icon" : {
      "16" : "icons/icon16.png",
      "32" : "icons/icon32.png",
      "48" : "icons/icon48.png",
      "128" : "icons/icon128.png"
    }
  },
  "commands" : {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+C",
        "mac": "Alt+C"
      },
      "description" : "Pick Color"
    }
  },
  "background" : {
    "scripts" : [
      "background.js" 
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{af885e92-20eb-4aa8-a7ee-ac65d0cdfb5c}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "host_permissions" : [
    "<all_urls>" 
  ],
  "web_accessible_resources" : [
    {
      "resources" : [
        "pdfjs/web/pdf-viewer.html" 
      ],
      "matches" : [
        "<all_urls>" 
      ]
    }
  ],
  "content_security_policy" : {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'"
  }
}