Examine source code of Fluffy grass

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Fluffy grass",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(190, 199, 255)",
      "toolbar_text": "rgb(0, 125, 24)",
      "frame": "rgb(0, 140, 71)",
      "tab_background_text": "rgb(246, 255, 241)",
      "toolbar_field": "rgb(226, 237, 238)",
      "toolbar_field_text": "rgb(26, 147, 111)",
      "tab_line": "rgb(244, 255, 0)",
      "popup": "rgb(188, 217, 255)",
      "popup_text": "rgb(74, 100, 255)",
      "tab_loading": "rgb(244, 255, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{246fee8e-b2a4-4578-b42b-fdb12818bfd1}"
    }
  }
}