Examine source code of Venator Theme

{
  "manifest_version": 2,
  "version": "4.0",
  "name": "Venator 4.0",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(30, 30, 30)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(210, 210, 210)",
      "toolbar_field": "rgb(17, 17, 17)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(17, 17, 17)",
      "popup_text": "rgb(255, 255, 255)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgb(22, 22, 22)",
      "popup_border": "rgb(99, 99, 99)",
      "sidebar_highlight_text": "rgb(0, 0, 0)",
      "sidebar_highlight": "rgb(255, 255, 255)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(0, 0, 0)",
      "toolbar_bottom_separator": "rgb(62, 62, 62)",
      "toolbar_field_border_focus": "rgb(60, 60, 60)",
      "toolbar_field_focus": "rgb(24, 24, 24)",
      "toolbar_field_highlight": "rgb(145, 145, 145)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_vertical_separator": "rgb(168, 168, 168)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b091a508-0ad3-4626-b033-4f0cedda70d6}"
    }
  }
}