Examine source code of Kit Mascot

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Kit",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(62, 18, 103, 0.9)",
      "toolbar_text": "rgb(244, 119, 37)",
      "frame": "rgb(33, 3, 63)",
      "tab_background_text": "rgb(145, 109, 185)",
      "toolbar_field": "rgb(33, 3, 63)",
      "toolbar_field_text": "rgb(181, 158, 213)",
      "tab_line": "rgb(244, 119, 37)",
      "popup": "rgb(62, 18, 103)",
      "popup_text": "rgb(207, 196, 223)",
      "popup_border": "rgb(244, 119, 37)",
      "tab_loading": "rgb(244, 119, 37)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{02ec3f67-d4d5-4971-93ae-63319775e932}"
    }
  }
}