Examine source code of Andy's Room

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Andy's Room",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(245, 216, 181)",
      "toolbar_text": "rgb(55, 36, 0)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(94, 94, 94)",
      "toolbar_field": "rgb(251, 251, 251)",
      "toolbar_field_text": "rgb(47, 47, 47)",
      "tab_line": "rgb(149, 227, 255)",
      "popup": "rgb(47, 47, 47)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(149, 227, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{791bb861-362a-4464-9d1b-2e15f6b2373c}"
    }
  }
}