Examine source code of Color Picker Plus

{
  "manifest_version": 2,
  "name": "Color Picker Plus",
  "version": "1.0",
  "description": "一個簡單的顏色挑選器，可顯示RGB、HSL、HSV和CMYK值",
  "icons": {
    "48": "picker.png",
    "96": "picker.png"
  },
  "browser_action": {
    "default_icon": "picker.png",
    "default_title": "Color Picker Plus"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "<all_urls>",
    "clipboardWrite"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6922ac12-5d76-4e46-b53a-9901b82972c0}"
    }
  }
}