Examine source code of a midnight sky

{
  "name": "a midnight sky ",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "sky view.jpg"
    },
    "colors": {
      "frame": "rgba(14, 65, 184, 1)",
      "tab_background_text": "rgba(219, 219, 219, 1)",
      "toolbar": "rgba(64, 97, 143, 0.53)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(0, 9, 43, 0.73)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 0.52)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cb202297-3096-4d0e-aaca-688767f647aa}"
    }
  }
}