Examine source code of Mint Balanced

{
  "manifest_version": 2,
  "name": "Mint Balanced",
  "version": "0.1",
  "theme": {
    "colors": {
      "tab_background_text": "hsl(0, 0%, 100%)",
      "tab_text": "hsl(0, 0%, 0%)",
      "tab_selected": "hsl(352, 65%, 95%)",
      "tab_line": "transparent",
      "tab_loading": "hsl(0, 0%, 0%)",
      "tab_loading_inactive": "hsl(0, 0%, 0%)",
      "frame": "hsl(173, 71%, 43%)",
      "popup": "hsl(0, 0%, 100%)",
      "popup_text": "hsl(0, 0%, 0%)",
      "popup_border": "hsl(173, 87%, 36%)",
      "popup_highlight": "hsla(174, 62%, 75%, 0.3)",
      "popup_highlight_text": "hsl(0, 0%, 0%)",
      "toolbar": "hsl(173, 80%, 69%)",
      "toolbar_text": "hsl(0, 0%, 100%)",
      "toolbar_field": "hsl(352, 65%, 95%)",
      "toolbar_field_text": "hsl(0, 0%, 0%)",
      "toolbar_field_focus": "hsl(0, 0%, 100%)",
      "toolbar_field_border_focus": "rgba(0, 179, 244, 1)",
      "toolbar_top_separator": "transparent",
      "toolbar_bottom_separator": "hsl(173, 71%, 43%)",
      "ntp_background": "hsl(174, 73%, 91%)",
      "ntp_card_background": "hsl(0, 0%, 100%)",
      "ntp_text": "hsl(0, 0%, 0%)",
      "sidebar": "hsl(0, 0%, 100%)",
      "sidebar_text": "hsl(0, 0%, 0%)",
      "sidebar_highlight": "hsla(174, 62%, 75%, 0.3)",
      "address_bar_box": "hsl(173, 71%, 43%)",
      "address_bar_box_hover": "hsla(173, 71%, 43%, 0.8)",
      "address_bar_box_active": "hsla(173, 71%, 43%, 0.65)",
      "address_bar_box_focus": "hsl(173, 80%, 69%)",
      "address_bar_box_text": "hsl(0, 0%, 100%)",
      "address_bar_url_color": "hsl(173, 79%, 40%)",
      "panel_item_hover": "hsla(174, 62%, 75%, 0.3)",
      "panel_item_active": "hsla(174, 62%, 75%, 0.45)",
      "panel_separator": "hsl(173, 87%, 36%)",
      "icons_attention": "hsl(0, 0%, 0%)",
      "toolbar_field_icons_attention": "hsl(0, 0%, 0%)",
      "tab_attention_dot": "hsl(94, 100%, 71%)",
      "appmenu_info_icon_color": "hsl(173, 100%, 71%)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e5dad11c-678d-4515-b258-df1c57c6eadc}"
    }
  }
}