Examine source code of Stay Private

{
  "manifest_version": 2,
  "name": "Stay Private",
  "version": "1.0",
  "description": "a dark purple theme for anyone who thinks privacy still matters",
  "browser_specific_settings": {
    "gecko": {
      "id": "stayprivate@mytheme",
      "strict_min_version": "68.0"
    }
  },
  "theme": {
    "colors": {
      "frame": "#120c1e",
      "frame_inactive": "#160e22",
      "tab_background_text": "#6848a0",
      "tab_selected": "#1e1430",
      "tab_line": "#9060d8",
      "tab_loading": "#9060d8",
      "tab_text": "#d0b8f8",
      "toolbar": "#181028",
      "toolbar_text": "#c0a0f0",
      "toolbar_field": "#201838",
      "toolbar_field_text": "#d8c0f8",
      "toolbar_field_border": "#302048",
      "toolbar_field_focus": "#281c40",
      "toolbar_field_text_focus": "#f0e0ff",
      "toolbar_field_border_focus": "#9060d8",
      "toolbar_top_separator": "#0a0810",
      "toolbar_bottom_separator": "#0a0810",
      "toolbar_vertical_separator": "#201838",
      "icons": "#8050c8",
      "icons_attention": "#a070e8",
      "button_background_hover": "#261c3c",
      "button_background_active": "#302048",
      "popup": "#181028",
      "popup_text": "#c0a0f0",
      "popup_border": "#302048",
      "popup_highlight": "#281c40",
      "popup_highlight_text": "#f0e0ff",
      "sidebar": "#120c1e",
      "sidebar_text": "#7858a8",
      "sidebar_highlight": "#281c40",
      "sidebar_highlight_text": "#f0e0ff",
      "sidebar_border": "#201838",
      "ntp_background": "#120c1e",
      "ntp_text": "#c0a0f0"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  }
}