Examine source code of Surrounded By Forests

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Surrounded By Forests",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(57, 87, 8, 0.71)",
      "toolbar_text": "rgb(232, 255, 154)",
      "frame": "rgb(8, 11, 33)",
      "tab_background_text": "rgb(183, 255, 0)",
      "toolbar_field": "rgb(62, 77, 22)",
      "toolbar_field_text": "rgb(225, 255, 148)",
      "tab_line": "rgb(47, 53, 26)",
      "popup": "rgba(97, 131, 44, 0.71)",
      "popup_text": "rgb(229, 255, 173)",
      "tab_loading": "rgb(47, 53, 26)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0157ccf3-f731-4c7c-ad9e-0d62793b8d1d}"
    }
  }
}