Examine source code of Mia .hack

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Mia .Hack",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(58, 89, 105, 0.17)",
      "toolbar_text": "rgb(255, 227, 0)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(241, 255, 0)",
      "toolbar_field": "rgba(0, 15, 57, 0.59)",
      "toolbar_field_text": "rgb(214, 217, 255)",
      "tab_line": "rgb(255, 234, 0)",
      "popup": "rgba(0, 15, 57, 0.89)",
      "popup_text": "rgb(161, 166, 255)",
      "button_background_hover": "rgba(207, 255, 0, 0.49)",
      "icons_attention": "rgb(128, 255, 128)",
      "tab_selected": "rgba(43, 25, 129, 0.61)",
      "toolbar_field_border": "rgba(122, 95, 255, 0.61)",
      "tab_loading": "rgb(255, 234, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{54a8b729-e8cd-4130-8a6f-db0d96f101c8}"
    }
  }
}