Examine source code of Bridgetown

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Barbados",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-002-609370e89a219e0548ac5ef6b4a7dd2e.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(207, 167, 110)",
      "toolbar_text": "rgb(220, 154, 58)",
      "frame": "rgb(223, 166, 136)",
      "tab_background_text": "rgb(197, 208, 141)",
      "toolbar_field": "rgb(222, 182, 219)",
      "toolbar_field_text": "rgb(163, 149, 212)",
      "tab_line": "rgb(145, 213, 131)",
      "popup": "rgb(182, 228, 142)",
      "popup_text": "rgb(198, 125, 212)",
      "tab_loading": "rgb(145, 213, 131)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a507eb89-74b5-476b-acb6-61296a636126}"
    }
  }
}