Examine source code of Macintosh Dark Gray

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Macintosh Dark Gray",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(73, 70, 71)",
      "toolbar_text": "rgb(238, 229, 233)",
      "frame": "rgb(51, 48, 49)",
      "tab_background_text": "rgb(223, 215, 217)",
      "toolbar_field": "rgb(51, 48, 49)",
      "toolbar_field_text": "rgb(238, 229, 233)",
      "tab_line": "rgb(121, 113, 116)",
      "popup": "rgb(51, 48, 49)",
      "popup_text": "rgb(238, 229, 233)",
      "icons": "rgb(238, 229, 233)",
      "ntp_background": "rgb(51, 48, 49)",
      "tab_loading": "rgb(121, 113, 116)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d1bfeab6-f0a1-4003-b72e-19312bd73f36}"
    }
  }
}