Examine source code of busy kirby

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "kirbuś",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(7, 50, 84, 0)",
      "toolbar_text": "rgb(0, 207, 255)",
      "frame": "rgb(255, 7, 7)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(255, 132, 212, 0.39)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(255, 132, 212)",
      "popup_text": "rgb(0, 0, 0)",
      "ntp_background": "rgb(15, 54, 96)",
      "ntp_text": "rgb(179, 0, 255)",
      "tab_loading": "rgb(0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7c24dcf6-383b-4856-a243-b2110db406b6}"
    }
  }
}