Examine source code of Night Ninja

{
  "manifest_version": 2,
  "version": "1.1resigned1",
  "name": "Night owl",
  "theme": {
    "colors": {
      "frame": "#011627",
      "tab_background_text": "#C0C4D5",
      "tab_text": "#C0C4D5",
      "tab_loading": "#82AAFF",
      "tab_line": "#C0C4D5",
      "tab_selected": "#0B2952",
      "tab_background_separator": "#0E293F",
      "toolbar_field": "#011627",
      "toolbar_field_text": "#00CB00",
      "toolbar_field_text_focus": "#C0C4D5",
      "toolbar_field_border": "#0E293F",
      "toolbar_bottom_separator": "#0E293F",
      "toolbar_field_border_focus": "#75A0BE",
      "toolbar_field_separator": "#0E293F",
      "toolbar": "#0B2952",
      "ntp_background": "#011627",
      "ntp_text": "#D6DEEB",
      "popup": "#011627",
      "popup_text": "#D6DEEB",
      "popup_border": "#0E293F",
      "popup_highlight": "#39556B",
      "popup_highlight_text": "#89C9FA",
      "icon": "#39556B",
      "icons_attention": "#8ab4f8",
      "button_background_hover": "#39556B",
      "button_background_active": "#39556B",
      "sidebar": "#011627",
      "sidebar_border": "#0E293F",
      "sidebar_highlight": "#698196",
      "sidebar_highlight_text": "#D6DEEB",
      "sidebar_text": "#C0C4D5"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9f6282ca-c1d5-4fed-8c52-abaff61a5080}"
    }
  }
}