Examine source code of Heavens Above

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Heavens Above",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(92, 204, 61, 0.35)",
      "toolbar_text": "rgb(229, 233, 64)",
      "frame": "rgb(109, 209, 81)",
      "tab_background_text": "rgb(255, 249, 255)",
      "toolbar_field": "rgba(130, 237, 100, 0.75)",
      "toolbar_field_text": "rgb(70, 4, 87)",
      "tab_line": "rgb(71, 32, 81)",
      "popup": "rgb(109, 209, 81)",
      "popup_text": "rgb(71, 32, 81)",
      "tab_loading": "rgb(71, 32, 81)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{28f71f4d-207f-4fea-b4ba-ae92b74c60b8}"
    }
  }
}