Examine source code of Scifi-Impression

{
  "name": "Scifi-Impression",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "spaceman.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(22, 92, 97, 0.68)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(23, 143, 83, 0.6)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 5, 159, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{855d9478-43f1-4df2-96ad-0bf92b446bca}"
    }
  }
}