Examine source code of Spooky Stuff

{
  "name": "Spooky",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Spooky.png"
    },
    "colors": {
      "frame": "rgba(83, 68, 85, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(83, 68, 85, 0)",
      "toolbar_field": "rgba(83, 68, 85, 0)",
      "toolbar_field_text": "rgba(250, 179, 108, 1)",
      "tab_line": "rgba(250, 179, 108, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6205ec0d-78bf-46e5-adff-c4514efd96f9}"
    }
  }
}