Examine source code of Sparky leaves

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Sparky leaves",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgb(189, 206, 198)",
      "toolbar_text": "rgb(66, 88, 84)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(54, 114, 33)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(5, 87, 82)",
      "tab_line": "rgb(255, 146, 0)",
      "popup": "rgb(230, 255, 217)",
      "popup_text": "rgb(27, 87, 53)",
      "tab_loading": "rgb(255, 146, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{44930993-cd34-4a78-9882-a70090f91155}"
    }
  }
}