Examine source code of Ado aishite aishite

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Ado aishite aishite",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(39, 73, 91)",
      "toolbar_text": "rgb(130, 182, 217)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(123, 171, 204)",
      "toolbar_field": "rgb(78, 136, 175)",
      "toolbar_field_text": "rgb(211, 235, 241)",
      "tab_line": "rgb(177, 201, 217)",
      "popup": "rgb(101, 181, 232)",
      "popup_text": "rgb(74, 77, 118)",
      "icons": "rgb(101, 181, 232)",
      "ntp_background": "rgb(101, 181, 232)",
      "popup_border": "rgb(123, 171, 204)",
      "popup_highlight": "rgb(101, 181, 232)",
      "sidebar_highlight_text": "rgb(88, 105, 117)",
      "tab_loading": "rgb(177, 201, 217)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5afddf06-9dac-41dd-8173-c2708899b0c1}"
    }
  }
}