Examine source code of Nevergrove Maple

{
  "manifest_version": 2,
  "version": "1.4",
  "name": "Nevergrove Maple",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "frame": "#312526",
      "frame_inactive": "#3a2c2d",
      "toolbar": "#443637",
      "toolbar_bottom_separator": "#615152",
      "toolbar_field": "#312526",
      "toolbar_field_border": "#4f4041",
      "toolbar_field_border_focus": "#e96a69",
      "toolbar_field_focus": "#312526",
      "toolbar_field_highlight": "#364d48",
      "toolbar_field_highlight_text": "#e6e6e5",
      "toolbar_field_text": "#e6d9bc",
      "toolbar_field_text_focus": "",
      "toolbar_text": "#e6d9bc",
      "toolbar_top_separator": "#55494a",
      "toolbar_vertical_separator": "#55494a",
      "button_background_active": "#615152",
      "button_background_hover": "#55494a",
      "icons": "#e96a69",
      "icons_attention": "#74be94",
      "popup": "#4f4041",
      "popup_border": "#e96a69",
      "popup_highlight": "#364d48",
      "popup_highlight_text": "#e6e6e5",
      "popup_text": "#e6d9bc",
      "sidebar": "#312526",
      "sidebar_border": "#55494a",
      "sidebar_highlight": "#364d48",
      "sidebar_highlight_text": "#e6e6e5",
      "sidebar_text": "#e6d9bc",
      "ntp_background": "#312526",
      "ntp_card_background": "#443637",
      "ntp_text": "#e6d9bc",
      "tab_background_text": "#e6d9bc",
      "tab_line": "#e96a69",
      "tab_loading": "#e96a69",
      "tab_selected": "#443637",
      "tab_text": "#e6d9bc"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "Nevergrove-Maple-firefox@nafnec.dev"
    }
  }
}