Examine source code of Halloween Collage Lite

{
  "name": "Halloween Collage Lite",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Halloween Collage.PNG"
    },
    "colors": {
      "frame": "rgba(0, 1, 3, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(250, 186, 97, 0.42)",
      "bookmark_text": "rgba(115, 55, 109, 0.93)",
      "toolbar_field": "rgba(115, 115, 115, 0.52)",
      "toolbar_field_text": "rgba(69, 47, 17, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a7818938-7f19-48b5-9f6a-32a92532882a}"
    }
  }
}