Examine source code of arctic black

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "arctic black",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(113, 201, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(98, 107, 112)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(98, 107, 112)",
      "tab_line": "rgb(113, 201, 255)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(113, 201, 255)",
      "button_background_active": "rgb(0, 0, 0)",
      "button_background_hover": "rgb(98, 107, 112)",
      "icons": "rgb(113, 201, 255)",
      "tab_text": "rgb(113, 201, 255)",
      "tab_loading": "rgb(113, 201, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7b9d7a24-ac25-4531-8a80-4db48b55c727}"
    }
  }
}