Examine source code of Three Perfect Puppies

{
  "name": "Three Perfect Puppies",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "ThreePerfectHcopy.jpg"
    },
    "colors": {
      "frame": "rgba(213, 220, 237, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(211, 218, 237, 0.07)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5d180156-8d73-4357-893f-ea02d421c5d7}"
    }
  }
}