Examine source code of SoundCloud Dark Theme

{
  "name": "SoundCloud Dark Theme",
  "description": "Simple dark theme for SoundCloud",
  "version": "1.0",
  "manifest_version": 3,
  "content_scripts": [
    {
      "matches": [
        "*://*.soundcloud.com/*"
      ],
      "run_at": "document_start",
      "css": [
        "dark.css"
      ]
    },
    {
      "matches": [
        "*://*.soundcloud.com/*"
      ],
      "run_at": "document_end",
      "js": [
        "replaceLogo.js"
      ]
    }
  ],
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "128": "icon/128.png"
  },
  "action": {},
  "browser_specific_settings": {
    "gecko": {
      "id": "zeld4h@gmail.com"
    }
  }
}