Examine source code of Windows Dark Theme

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Windows Taskbar",
  "theme": {
    "colors": {
      "button_background_hover": "rgba(255, 255, 255, 0.3)",
      "tab_background_text": "rgb(255, 255, 255)",
      "ntp_background": "rgb(16, 16, 16)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup": "rgba(16, 16, 16, 0.7)",
      "popup_border": "rgba(0, 0, 0, 0)",
      "popup_text": "white",
      "popup_highlight_text": "white",
      "toolbar": "rgb(5, 5, 5)",
      "toolbar_text": "rgb(255, 255, 255)",
      "tab_background": "rgb(16, 16, 16)",
      "tab_line": "rgb(16, 16, 16)",
      "sidebar": "rgb(16, 16, 16)",
      "frame": "rgb(16, 16, 16)",
      "frame_inactive": "rgb(16, 16, 16)",
      "toolbar_field": "rgb(16, 16, 16)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "tab_background_separator": "rgba(255, 255, 255, 0.7)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1c95b25f-5fff-4caa-87c3-c6074f36ed48}"
    }
  }
}