Examine source code of Discord Midnight

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Discord [Midnight]",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(156, 156, 163)",
      "frame": "rgb(7, 7, 9)",
      "tab_background_text": "rgb(86, 86, 91)",
      "toolbar_field": "rgb(18, 18, 20)",
      "toolbar_field_text": "rgb(156, 156, 163)",
      "tab_line": "rgb(86, 86, 91)",
      "popup": "rgba(7, 7, 9, 0.98)",
      "popup_text": "rgb(156, 156, 163)",
      "button_background_active": "rgb(60, 60, 64)",
      "button_background_hover": "rgb(18, 18, 20)",
      "icons_attention": "rgb(156, 156, 163)",
      "icons": "rgb(156, 156, 163)",
      "ntp_background": "rgb(7, 7, 9)",
      "popup_border": "rgb(86, 86, 91)",
      "tab_selected": "rgb(18, 18, 20)",
      "tab_text": "rgb(156, 156, 163)",
      "toolbar_bottom_separator": "rgb(39, 39, 43)",
      "toolbar_field_border": "rgb(39, 39, 43)",
      "toolbar_top_separator": "rgb(39, 39, 43)",
      "toolbar_vertical_separator": "rgb(23, 23, 25)",
      "tab_loading": "rgb(86, 86, 91)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{15188cbd-bb6b-440f-a121-c49d0bc82c61}"
    }
  }
}