Examine source code of New Jersey Devils (NHL)

{
  "name": "New Jersey Devils (NHL)",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "devils.svg"
    },
    "colors": {
      "frame": "rgba(206, 17, 38, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(139, 1, 16, 0.7)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(139, 1, 16, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cc2aa6d0-cbfa-4f4b-b7a7-4a894001f37e}"
    }
  }
}