Examine source code of narrango

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Naranjo_V02",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-010-e9f94a3e61666a4c7677eb9cce17d854.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 132, 57)",
      "toolbar_text": "rgb(138, 64, 10)",
      "frame": "rgb(251, 172, 124)",
      "tab_background_text": "rgb(113, 62, 24)",
      "toolbar_field": "rgba(255, 195, 158, 0.5)",
      "toolbar_field_text": "rgb(113, 62, 24)",
      "tab_line": "rgb(253, 142, 70)",
      "popup": "rgb(249, 234, 220)",
      "popup_text": "rgb(217, 126, 55)",
      "tab_loading": "rgb(253, 142, 70)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2abe0cd2-be21-49f5-a848-9ca575d225b6}"
    }
  }
}