Examine source code of Google Dark Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Google Dark",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(24, 26, 27)",
      "toolbar_text": "rgb(117, 167, 255)",
      "frame": "rgb(24, 26, 27)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(24, 26, 27)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(18, 90, 184)",
      "popup": "rgb(24, 26, 27)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(18, 90, 184)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8a809dd1-d392-4a0c-9b9a-cf737ffaff1b}"
    }
  }
}