Examine source code of Everforest Dark+

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Everforest Darker",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(52, 63, 68)",
      "toolbar_text": "rgb(166, 166, 166)",
      "frame": "rgb(45, 53, 59)",
      "tab_background_text": "rgb(166, 166, 166)",
      "toolbar_field": "rgb(71, 82, 88)",
      "toolbar_field_text": "rgb(220, 209, 187)",
      "tab_line": "rgb(52, 63, 68)",
      "popup": "rgb(45, 53, 59)",
      "popup_text": "rgb(220, 209, 187)",
      "button_background_active": "rgb(71, 82, 88)",
      "icons": "rgb(166, 166, 166)",
      "sidebar_text": "rgb(166, 166, 166)",
      "tab_background_separator": "rgb(71, 82, 88)",
      "tab_loading": "rgb(71, 82, 88)",
      "tab_selected": "rgb(61, 72, 77)",
      "tab_text": "rgb(220, 209, 187)",
      "toolbar_field_border": "rgb(52, 63, 68)",
      "toolbar_field_focus": "rgb(45, 53, 59)",
      "toolbar_field_highlight_text": "rgb(219, 188, 127)",
      "toolbar_field_highlight": "rgb(45, 53, 59)",
      "toolbar_field_separator": "rgb(71, 82, 88)",
      "toolbar_top_separator": "rgb(71, 82, 88)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1324013d-9fae-44a7-ba0f-ad22821623f0}"
    }
  }
}