Examine source code of Witch's Halloween Kitchen

{
  "name": "Witch's Halloween Kitchen",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Witch's Halloween Kitchen.png"
    },
    "colors": {
      "frame": "rgba(234, 179, 146, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(235, 181, 146, 0)",
      "toolbar_field": "rgba(235, 181, 146, 0)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6a30cc99-cd5f-4204-bf20-4e7817893a0e}"
    }
  }
}