Examine source code of ishikou 2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "ishikou 2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(248, 237, 236, 0)",
      "toolbar_text": "rgb(140, 89, 87)",
      "frame": "rgb(204, 218, 206)",
      "tab_background_text": "rgb(172, 151, 151)",
      "toolbar_field": "rgb(248, 237, 236)",
      "toolbar_field_text": "rgb(140, 89, 87)",
      "tab_line": "rgba(140, 89, 87, 0.53)",
      "popup": "rgb(248, 237, 236)",
      "popup_text": "rgb(140, 89, 87)",
      "tab_text": "rgb(140, 89, 87)",
      "toolbar_field_border": "rgba(248, 237, 236, 0)",
      "toolbar_field_separator": "rgb(0, 0, 0)",
      "toolbar_top_separator": "rgba(255, 255, 255, 0)",
      "tab_loading": "rgba(140, 89, 87, 0.53)"
    }
  }
}