Examine source code of Haraj UI Enhanced

{
  "manifest_version": 2,
  "name": "Haraj UI Enhanced",
  "version": "1.0.3",
  "short_name": "Haraj UI Enhanced",
  "description": "Browser extension for enhancement of haraj.com.sa UI to show more contrasting colors and more posts on home screen, as a grid.",
  "author": "PDF Coffee",
  "homepage_url": "https://pdfcoffee.github.io/Haraj-UI-Enhanced/",
  "icons": {
    "16": "gfx/icon16.png",
    "32": "gfx/icon32.png",
    "48": "gfx/icon48.png",
    "128": "gfx/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://haraj.com.sa/*",
        "*://haraj.com/*",
        "*://www.haraj.com.sa/*",
        "*://www.haraj.com/*",
        "*://legacy.haraj.com.sa/*"
      ],
      "css": [
        "css/haraj.com.sa.css"
      ]
    },
    {
      "matches": [
        "*://beta.haraj.com.sa/*"
      ],
      "css": [
        "css/beta.haraj.com.sa.css"
      ]
    },
    {
      "matches": [
        "*://*.haraj.com.sa/allreviews.php*",
        "*://*.haraj.com/allreviews.php*"
      ],
      "css": [
        "css/page-allreviews.css"
      ]
    },
    {
      "matches": [
        "*://*.haraj.com.sa/sitemap.php*",
        "*://*.haraj.com/sitemap.php*"
      ],
      "css": [
        "css/page-sitemap.css"
      ]
    },
    {
      "matches": [
        "*://*.haraj.com.sa/*",
        "*://*.haraj.com/*"
      ],
      "css": [
        "css/pages.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "gfx/*.*",
    "fonts/*.woff2"
  ]
}