Examine source code of Everforest Dark v3

{
  "manifest_version": 2,
  "version": "2.5",
  "name": "Everforest Dark v3",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(52, 63, 68)",
      "toolbar_text": "rgb(188, 180, 163)",
      "frame": "rgb(45, 53, 59)",
      "tab_background_text": "rgb(133, 140, 136)",
      "toolbar_field": "rgb(45, 53, 59)",
      "toolbar_field_text": "rgb(151, 185, 163)",
      "tab_line": "rgba(217, 165, 144, 0.02)",
      "popup": "rgb(52, 63, 68)",
      "popup_text": "rgb(188, 180, 163)",
      "button_background_active": "rgba(211, 198, 170, 0.27)",
      "button_background_hover": "rgba(211, 198, 170, 0.13)",
      "icons": "rgb(165, 185, 134)",
      "ntp_background": "rgb(42, 46, 52)",
      "ntp_text": "rgb(211, 198, 170)",
      "popup_border": "rgb(45, 53, 59)",
      "popup_highlight_text": "rgb(211, 198, 170)",
      "popup_highlight": "rgba(151, 185, 163, 0.2)",
      "sidebar_border": "rgb(52, 63, 68)",
      "sidebar_highlight_text": "rgb(167, 192, 128)",
      "sidebar_highlight": "rgb(73, 83, 87)",
      "sidebar_text": "rgb(165, 176, 166)",
      "sidebar": "rgb(52, 63, 68)",
      "tab_loading": "rgb(167, 192, 128)",
      "tab_selected": "rgba(217, 165, 144, 0.02)",
      "tab_text": "rgb(214, 165, 137)",
      "toolbar_bottom_separator": "rgb(51, 55, 60)",
      "toolbar_field_border_focus": "rgba(151, 185, 163, 0.5)",
      "toolbar_field_highlight": "rgba(31, 105, 119, 0.95)",
      "toolbar_top_separator": "rgb(52, 63, 68)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{edd1d871-b029-4fe3-a125-e55bc707c373}"
    }
  }
}