Examine source code of Everforest Dark Extended

{
  "manifest_version": 2,
  "version": "1.2",
  "name": "Everforest Dark Extended",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "frame": "#272e33",
      "frame_inactive": "#2d353b",
      "toolbar": "#343f44",
      "toolbar_text": "#d3c6aa",
      "toolbar_top_separator": "#343f44",
      "toolbar_vertical_separator": "#475258",
      "toolbar_bottom_separator": "#343f44",
      "tab_background_separator": "#2d353b",
      "tab_background_text": "#859289",
      "tab_text": "#a7c080",
      "tab_line": "#343f44",
      "tab_loading": "#a7c080",
      "bookmark_text": "#d3c6aa",
      "sidebar": "#2d353b",
      "sidebar_text": "#d3c6aa",
      "sidebar_highlight": "#a7c080",
      "sidebar_highlight_text": "#2d353b",
      "sidebar_border": "#475258",
      "toolbar_field": "#2d353b",
      "toolbar_field_focus": "#343f44",
      "toolbar_field_border": "#475258",
      "toolbar_field_border_focus": "#a7c080",
      "toolbar_field_highlight": "#a7c080",
      "toolbar_field_highlight_text": "#2d353b",
      "toolbar_field_text": "#859289",
      "toolbar_field_text_focus": "#d3c6aa",
      "popup": "#2d353b",
      "popup_text": "#d3c6aa",
      "popup_border": "#475258",
      "popup_highlight": "#a7c080",
      "popup_highlight_text": "#2d353b",
      "button_background_active": "#3d484d",
      "button_background_hover": "#3d484d",
      "icons": "#a7c080",
      "icons_attention": "#d699b6",
      "ntp_background": "#2d353b",
      "ntp_text": "#d3c6aa"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{093a337e-b44e-4572-8e79-6e62f5594235}"
    }
  }
}