Examine source code of Polygon Digital Art

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Polygon Digital Art",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(15, 19, 24, 0.62)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(70, 56, 74)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(63, 102, 179, 0.2)",
      "toolbar_field_text": "rgb(255, 249, 251)",
      "tab_line": "rgb(232, 119, 11)",
      "popup": "rgb(217, 122, 32)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(232, 119, 11)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a4d6ef36-8fcc-4586-ab01-6e2b5b6cff6c}"
    }
  }
}