Examine source code of 4Data Driven Black A

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "4Data Driven Black A",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(39, 39, 39)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(245, 130, 32)",
      "tab_background_text": "rgb(39, 39, 39)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(39, 39, 39)",
      "tab_line": "rgb(39, 39, 39)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(39, 39, 39)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5ae3cb08-00e7-4cd7-8a41-e398c662f91e}"
    }
  }
}