Examine source code of theme dark red midnight

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "theme dark red midnight",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(22, 22, 22)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(50, 53, 57)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(205, 35, 35)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(205, 35, 35)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{df39175e-fd0d-4fe9-b9af-4e08e462c71a}"
    }
  }
}