Examine source code of Sky land

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Sky land",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(27, 217, 34, 0.1)",
      "toolbar_text": "rgb(0, 122, 136)",
      "frame": "rgb(125, 251, 255)",
      "tab_background_text": "rgb(0, 126, 28)",
      "toolbar_field": "rgba(255, 255, 255, 0.5)",
      "toolbar_field_text": "rgb(0, 71, 79)",
      "tab_line": "rgb(0, 255, 16)",
      "popup": "rgb(231, 255, 203)",
      "popup_text": "rgb(0, 89, 186)",
      "tab_loading": "rgb(0, 255, 16)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c0c0fc9e-1c5b-4cfb-814b-f72f2db10c40}"
    }
  }
}