Examine source code of Asume Tech New Tab

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Aerial View Abstract",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(44, 159, 56, 0.62)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(42, 186, 125)",
      "tab_background_text": "rgb(58, 58, 185)",
      "toolbar_field": "rgba(63, 102, 179, 0.2)",
      "toolbar_field_text": "rgb(255, 249, 251)",
      "tab_line": "rgb(133, 26, 54)",
      "popup": "rgb(49, 204, 157)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(133, 26, 54)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c6cdb87c-01bd-450b-aaae-e52ce311e79d}"
    }
  }
}