Examine source code of Red Matrix (animated)

{
  "name": "Red Matrix (animated)",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "RedMatrix.gif"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 0, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(255, 0, 0, 1)",
      "toolbar_field": "rgba(204, 34, 34, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(255, 9, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5a890622-5b63-454a-8ce7-25244ee08a81}"
    }
  }
}