Examine source code of Tech Christmas animated

{
  "name": "Tech Christmas",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "965568769797b84e15d37efcb95e02dd-ezgif.com-crop(1).gif"
    },
    "colors": {
      "frame": "rgba(189, 188, 204, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0.2)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(0, 191, 172, 0.24)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(77, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a181534a-4c78-4908-9583-e176578229a9}"
    }
  }
}